How To Calibrate Speedometer For Larger Tires Chevy

For example if the speedometer reads 55 mph, our true speed is 58-59 mph. Find 599 listings related to Auto Speedometer Calibration in Winchester on YP. How will bigger wheels affect my car? Mini Spy the bigger the rim the thinner the tire has to be to compensate, if you go too big you lose acceleration, but at high speeds you gain more speed. I can see where they might not want to get into possible issues with very large tires on a lifted truck, but I'm on a stock truckcome on! Edited October 5, 2016 by cford716. He said that the computer automatically corrects itself for larger tires. My speedometer reads about 3 mph faster. Find Speedometer Recalibration Devices and get Free Shipping on Orders Over $99 at Summit Racing!. Classic Speed® is a GPS based speedometer drive unit that lets you keep your original cable driven speedometer and offers one time speedometer calibration no matter the tire size or rear end ratio change. Since you have a bigger tire on, your wheel will rotate slower, causing the odometer, speedometer, etc, to register slower speeds and shorter distances since they were calibrated with the smaller tire. Apart from this, your speedometer may provide inaccurate information because of certain modifications, for example, installation of larger tires. If you pick bigger tires, you are increasing the circumference around the tire, so the distance around it is longer. With smaller tires, the speedometer reads faster than I am going, and adds more miles to my odometer. Turn the key off and remove the ground wire. online at www. Vic said: There is definitely a procedure to calibrate your speedometer. 95 and not 24. I just leveled and put some larger tires on my Canyon. He said that the computer automatically corrects itself for larger tires. com How to Recalibrate a Speedometer After a Tire Size Increase larger tires cause the speedometer to read a speed slower than the vehicle's actual speed while smaller tires cause the speedometer to read a speed faster than the vehicle's actual speed. A large change in the size of a car's tires is one of the most common ways a speedometer's accuracy is compromised because it affects how far the car goes with each revolution of the tires. I probably wouldnt worry too much but my newly licensed son will be driving this quite a bit and the need for an accurate speedometer is important. I called my local GMC dealership and talked to the service manager. Engineers use the tire height and circumference along with the final axle ratio to get your speedometer to operate correctly. Install the new gear into the speedometer assembly. 25" tires for my speedo to be accurate. Speedometer will be affected if you change tire size/circumference. The Hypertech Speedometer Calibrator keeps your gauges running correctly on your modded vehicle Compensates for gear changes, larger wheels/tires, and other aftermarket add-ons Depending on your vehicle, choose between the Speedometer Calibrator or the In-Line Calibrator Module:. If you divide by 3, multiply by 7. 50 how much will my speedometer differ I'm not real sure what my gear ratio is but what is a ballpark figure on how much it will be off. After entering your tire sizes, you're only about 2 mph off (slower) on the MPH gauge than the stock tires. Well, aftermarket tires and wheels can certainly help if you choose wisely. 939, then add 6. available upgrades. I borrowed a friend's GPS to set the speed correctly. This box converts pulses from our 700-R4 transmission to a signal for the electronic speedometer. The middle ground is Hypertech's Tire Size Calibration Tool. Contact Techline (1-800-828-6860 English or 1-800-503-3222 French) to obtain a VCI number. To examine the effects of installing larger wheels and tires, also known as “plus-sizing,” we tested five wheel-and-tire combinations—ranging from 15 to 19 inches—on a 2010 Volkswagen Golf. Click on the sizes for each tire to compare prices online. Bigger wheels look cool, but wheel and tire size has a huge effect on ride, handling, and noise. Move a couple jumpers and you're good to go, with a diesel that is. Used 2016 Chevrolet Trax, from Suburban Toyota of Troy in Troy, MI, 48084. Can a Toyota dealership re-calibrate your speedometer? I know all about horse power/torque loss and rear end ratios. I've measured the speedometer against the GPS before and the speed reading is around 1. Available in cream vintique only at this time. Periodically, it’s a good idea to check the accuracy of your car’s speedometer, just to be sure that what it’s showing you is the truth. A speedometer is one of the more important parts of your car—a safety feature that protects you both from unsafe driving and from the financial repercussions of getting a speeding ticket. If they didn't, I could see this being a serious liability/legal issue related to speedometer and odometer accuracy. The speedometer is pretty much fixed. If your tire height has not changed, enter the same value. No reason the manufactures couldn't set it up to just plug in a tire diameter. It will do all the work for you. Page 1 of 3 - Why bigger tires? - posted in Trucks, Truck Accessories & Mods: As some of you know, I recently acquired a new (to me) truck. Speedometer In-line Calibrator by Rough Country®. 35 Inch BF Goodrich AT KO2 Tires. Picked up a Hypertech Speedometer programmer (just does speedo, diff. Testing Calibration (Electronic Speedometer calibration made easy!) To calibrate your electronic speedometer: 1) With the power off, push and hold the trip button. Here's one for y'all to ponder. With this product, customers can request calibration adjustments to correct speedometer / shifting problems introduced by changing front/rear axle gear ratios and/or. The TRIFECTA Advantage+ Powertrain Calibration for the MY2015+ Chevrolet Colorado allows speedometer recalibration for aftermarket wheels and tires, and includes a TRIFECTA flash loader. 2545 Superchips Flashcal F5 Calibration Tool 99-2016 Chevy GMC Silverado Sierra 851672007060 | eBay. I called the "best delaer" in town who has the "best service department" and they told me they don't know what to do. To measure for bigger tires, follow these steps: Remove the current wheels and measure the tires’ exact width and height. Superchip's Flash Cal isn't compatible with 2017's and the 6. The odometer will be off as well as the speedometer when you add larger tires. If you plan to get new wheels, measure the backspacing as well. Best Answer: most of the time the speedometer will do it because it only turns as fast as the axle will turn,so it should re-calibrate its self,the older ones wouldn't,but the newer ones go by the speed of the axle,so it may read right,if it doesn't the dealer can do this for you,good luck. Both are calibrated by the factory to work with factory wheel and tire sized. DIY Kits available on the MC. A small tire will spin faster. Economy: Often times, smaller diameter wheels and taller tires are less expensive than larger diameter wheels and low profile tires. Obviously a Chevy odometer calibrator will save you money, both in repair shop diagnostic fees and potential speeding tickets. Vic said: There is definitely a procedure to calibrate your speedometer. 2019+ speedometer calibration for larger tires. 1955, 1956, 1957 Classic Chevrolet Parts For Restored Or Custom Chevy’s. They go off of circumference and revs per mile and that measurement is the same for all of the tires sizes GM offers. Best Answer: I work on chevy's only 15 years though. NOTE: Changing the tire diameter CHANGES the SPEEDOMETER accuracy! This ALTERNATE tire size will cause the 'Actual Vehicle Speed' to be. The second number is the sidewall height from the wheel represented as a percentage of the width. Calibration adjusts for these variances and is done by the manufacturer, which sets up the speedometer gear to correspond with the factory-installed ring and pinion ratio and tire size. How can I recalibrate the speedometer on a '04 silverado? - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. It shows the actual speed your car is going after the tyre size change - installing the new tyres with a larger or smaller tyre diameter than the original equipment(OE) tyre. When they had a look, my truck was calibrated for 17" wheels from the factory, when it came with 20" wheels. Reading the manual it appears code 68 can be set if the input speed and output speed differ by 200+/- or more for several seconds will trigger the code 68. Re: Speedometer Re-calibration for Larger Wheels/Tires Feb 19 2018, 10:08pm Sounds like you got is all set up. Speedometer Calibrator. How to recalibrate speedo for larger tires. By knowing your gear ratios and tire size you'll get a more accurate idea here. Notes: You have 2 minutes to do the first tire after putting the truck into tire recalibration learning mode. Two of the wheels (the Miata and Focus) are 15 inches in diameter, while the BMW 323iT (a wagon) and 328i have 16- and 17-inch wheels. The video shows how to make changes to the Tire/Gear number. Now on the highway 8th all the time and even had engine management kick in a few times !!! Mileage now matches what my brothers. Resetting the Silverado speedometer may be necessary if it becomes stuck after a malfunction. That's why there is a procedure to resynchronize the system. Larger tires look cool, but you can lose low-end torque. It will not correct or calibrate the speedometer's accuracy, and will not change the calibration of the ABS rear speed sensor value on vehicles that obtain rear wheel speed data from the ECM/PCM/VCM via the VSS. This results in the odometer mileage increasing faster than it should, not good for reselling time. This module is perfect for vehicles with computers that don't allow for tire and gear ratio correction, or to re-calibrate for tire and gear sizes outside the range of programmers. You are the Man. Press one end down on the valve stem of the tire and at the other end a stem pops out to show the pressure of air in the tire. Unless you miscalculate the number of teeth you need for the new speedometer gear to calibrate your speedometer with your current gear ratio and tire size, you should only need to purchase one gear per gear change or tire size change. If they let you recalibrate, you could just tell the vehicle it has 20” tires on it, while keeping stock tires, and when you sell your truck with 300k miles on it, the Odo would only read 200k miles etc. Reviewed By Paul S (Saratoga Springs, NY) Reviewed for a 2017 Chevy Colorado —12/12/2017 6:47 AM. Man up, buy a calibration unit like the Tazer or FlashCal and call it a day. The days of clunky,. Check out the installation of a Classic Dash 6 gauge panel with Auto Meter gauges on a 1980 Chevy Malibu - Super Chevy Magazine Electronic Speedometer Calibration 1. 810 inch properly meshes with 1. You just change the "Distance Impulse Number". If bigger than that yes you need one of those devices or live with. Used 2016 Chevrolet Trax, from Suburban Toyota of Troy in Troy, MI, 48084. I just run mine on the lowest setting and have it set for my larger than stock tire size. Performance Exhaust Upgrade. This part fits most 1941 1942 1946 1947 1948 1949 1950. If the tire size is different from what was stated, you would need to recalculate it. I got bigger tires, 33", on my truck. My speedometer reads about 3 mph faster. I would conclude the GPS is accurate and tires sizing can cause speed errors. I told Gene that I had a 19-tooth speedo gear. You now have a completely accurate speedometer, and should you choose to change gear ratios, or tire sizes later, simply go back to your mile and calibrate it again. I put 18" Boyd Coddington billet rims with some 285/60 tires which are larger diameter than the stock wheels and tires. 00 Cash Complete Rebuilt. Looking for a 2015 Chevrolet Silverado 1500 Power Programmer? Get yours at Wholesale Prices and Free Shipping over $50 only here at AutoPartsWarehouse!. An added benefit is the ability to calibrate your speedometer for the tire diameter. Depending on the difference of tires, it can be in green or in red. Can a Toyota dealership re-calibrate your speedometer? I know all about horse power/torque loss and rear end ratios. While holding the button, start the vehicle and continue to hold the button until the pointer sweeps to full scale and stays at full scale. 2017+ Super Duty - Speedo calibration - I went up a good bit on wheel and tire size and my speedo is way off now. 50 R17 on a 99 Dodge Ram 1500. This does have an effect on the accuracy of the speedometer. mph, when the speedometer reads exactly 65mph. Tire Change / Speedometer Change Calculator. The Future of Speedometer Design - The future of speedometer design will improve upon the location of the instrument cluster. You need to calibrate the gears in the transfer case to obtain a gear ratio of 2. Unless driven gears with more than 45 teeth, and/or drive gears with fewer than 15 teeth become available, it will be impossible to have an accurate speedometer with rearend gear ratios lower (higher numerically) than 3. If you change tires and wheels on your Corvette, you may have to change the speedometer gear to make the speedo read correctly. The advantages of smaller tires outweigh disadvantages. Re: Speedometer. I don't know directly, but it shouldn't need a different calibration, or at least not much. This is a result of changing the final drive gearing in my S2000, but you could also have a speedometer reading incorrectly from putting on different tires or wheel sizes. Find 1729 listings related to Auto Speedometer Calibration in Winston Salem on YP. Testing Calibration (Electronic Speedometer calibration made easy!) To calibrate your electronic speedometer: 1) With the power off, push and hold the trip button. For example, my Jeep Grand Cherokee had a gear in the transfer case that could be changed out to adjust for different tire sizes. The left side of the calculator requires all three entries. 2018 Speedometer Calibration Discussion in 'Audio I have a chance to get a larger set of wheels and tires for my 2018. Speedometer Calibration found in: Hypertech Speedometer Calibrator, Hypertech Speedometer Calibrator, Hypertech In-Line Speedometer Calibrator Module,. If bigger than that yes you need one of those devices or live with. Tire size is entered correctly (I saw it with my own eyes) but the odometer is reading distance too fast (i. Can a normal tire shop calibrate this or do you have to have a scan tool attatched by a mechanic?. 1" and lower RPM by 21/mile. A small tire will spin faster. Advantages & Disadvantages of larger tires. The calibration of a vehicle’s speedometer and odometer is based on the circumference of the vehicle’s factory-installed tires. You can reprogram a vehicle when changing tire size using an on-board diagnostics system, or OBDII. Your speedometer reading must be within a range of plus or minus four percent off, but that’s four percent over the entire range of the speedometer, and that range can then be shifted in what. If you are running tires that are larger than the stock or oversize sizes specified by GM, yes, your speedometer will be higher by so many MPH. If they make one. 1999 - 2016 Chevy Silverado Speedometer Calibrators - Superchips FlashCal F5 Calibration Tool 2545 2000 - 2002 Chevy Silverado Speedometer Calibrators - Hypertech Speedometer Calibrator 730100 2006 - 2018 Chevy Silverado Speedometer Calibrators - Hypertech Speedometer Calibrator 732501. And the 15 is the rim height in inches. No dip switches and can be reprogramed at any time to accommodate changes in gear ratio or wheel and tire combination. How do I fix the speedometer after changing wheels Is there a way to fix the speedometer after changing wheel size? Upgrading to bigger wheels will actually help the odometer reading now that I think of it, but let's say I want it perfect, is this something that can be done through a vcds?. The Flashcal For Truck Calibration Tool allows you to calibrate your truck for large aftermarket tires, read/clear diagnostic trouble codes, adjust your speed limiter, and more!. Testing Calibration (Electronic Speedometer calibration made easy!) To calibrate your electronic speedometer: 1) With the power off, push and hold the trip button. and the rear tires are 5% larger than stock. Enter the new vehicle tire size. to re-calibrate tire size. Move a couple jumpers and you're good to go, with a diesel that is. Now there are 2 sidewalls (that's 337. So this sound like it only corrects the speedometer and nothing else, so things like shift points, abs system, etc. We all know a ticket is about the biggest buzz kill on earth! So if you're about to get bigger tires than stock or already have them installed, its time to calculate your true MPH. Thanks in advance, Harleyman. Both are calibrated by the factory to work with factory wheel and tire sized. Now my speedometer is reading 5 mph slower than I'm actually going. How To Adjust Speedometer for Larger Tires? I used my Ultragauge to calibrate my 275/85/16. They are related by a mathematical relationship and the condition that your tyre does not slip on the road. But since the tires are taller so it will have the effect of lowering you gear ratio slightly. The Hypertech Speedometer Calibrator keeps your gauges running correctly on your modded vehicle Compensates for gear changes, larger wheels/tires, and other aftermarket add-ons Depending on your vehicle, choose between the Speedometer Calibrator or the In-Line Calibrator Module:. No more false mileage added to your tumblers which affects resale value. This will allow for correction of speedometer and odometer readingsfor the new tire height. To calculate your speedometer difference enter the information for the old tire size, new tire size, old gear ratio, new gear ratio and speed reading. To determine your tires true diameter in relation to determining what speedometer gears you need, measure from the ground up to the center of the axle then multiply by two. I got bigger tires, 33", on my truck. It’s really pretty simple: a nylon gear is turned by a screw on the output shaft. 33 Inch BF Goodrich AT KO2 Tires. Why change gear ratios? If you’re new to the off-road world or unfamiliar with the way the axles on your truck work, then you might be unfamiliar with why you’d want to bother changing the. Superchips has introduced its tune for the 2015 Chevrolet Silverado, and listed why it benefits the Chevy Silverado. The actual run out of the tire can be as much as 2 to 3 inches less than what the circumference of the tire measures. Large Inventory of New, Used and OEM Automotive Parts at. My speedometer is off approximately 10 to 12 mph. After installing the big 285's on the truck I've done what I had to do to calibrate the speedometer so lets go check it and see how close I got it. Speedometer In-line Calibrator by Rough Country®. SCA Red Brake Caliper Covers. The GT Gas tuner unlocks more horsepower and torque to meet the unique demands you put on your vehicle. It is the driver s responsibility to maintain System (TPMS). but if your blower motor works then its probably a safe bet that that is not it. So if putting bigger tires on your car makes it think it's driving less miles than it actually is. Put the finishing touch on your lifted vehicle with Rough Country's Speedometer Calibration Device! This easy-to-use Speedometer Calibrator helps you quickly and easily reprogram your vehicle's speedometer to match the output of your larger tires. We have a large selection of new and used cars and trucks, and the full Chevy lineup, including the legendary Silverado 1500 , midsize Colorado , and ever-popular Equinox and Traverse. I say might because it depends on how much larger your tires are from stock (the IDS software has limits). 1" and lower RPM by 21/mile. Can a chevy dealer calibrate my 1999 suburban speedometer - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. Unless driven gears with more than 45 teeth, and/or drive gears with fewer than 15 teeth become available, it will be impossible to have an accurate speedometer with rearend gear ratios lower (higher numerically) than 3. Recalibrating speedometer for tire size change?? Post by AK Lew » Sat Jan 19, 2008 10:32 am I've heard that you have to recalibrate the truck's computer, to reflect a new tire sizeso the speedometer and odometer work correctly. Contact Techline (1-800-828-6860 English or 1-800-503-3222 French) to obtain a VCI number. I'm not sure how familiar you are with programmers but the ones I'm talking about are designed to also increase power and changing tire size is an added feature they offer. The speedometer on these is electronically controlled and therefore you only have two options from all the research I've done: 1) Some dealers are able to re-program the ECU so that it the speedometer will accommodate for different gearing and larger tires. This truck has bigger tires on it and the speedometer is screwed up/wrong. Best Answer: most of the time the speedometer will do it because it only turns as fast as the axle will turn,so it should re-calibrate its self,the older ones wouldn't,but the newer ones go by the speed of the axle,so it may read right,if it doesn't the dealer can do this for you,good luck. Click here for detailed information and to view our entire inventory of Used Cars. Only hope of calibrating it would be the dealers diagnostic software ("Electronic Wrench"). When they had a look, my truck was calibrated for 17" wheels from the factory, when it came with 20" wheels. I put bigger tires on my 00 Sierra (305/70R16 Nitto Terra Grapplers for those who are wondering) and would like to get the speedometer reading correctly for two reasons. The Flashcal for Truck is a product designed to give features and calibration tools to truck owners at a great price. Changing the stock parts, including the vehicle's tires, can throw off the speedometer calibration; larger tires cause the speedometer to read a speed slower than the vehicle's actual speed while smaller tires cause the speedometer to read a speed faster than the vehicle's actual speed. Features on-line gear ratio and tire sizing calculators for the offroad and 4x4 enthusiast. So this sound like it only corrects the speedometer and nothing else, so things like shift points, abs system, etc. The JBA headers and exhaust, combined with an AEM intake, boosted power across the rpm range. Enter the new vehicle tire size. CONS: When small spare tires are in use, they might impair certain vehicle features like ABS, traction control, and even speedometer operation. This results in the odometer mileage increasing faster than it should, not good for reselling time. To measure for bigger tires, follow these steps: Remove the current wheels and measure the tires’ exact width and height. gear, scans and deletes codes. The speedometer is pretty much fixed. Larger tires look cool, but you can lose low-end torque. Using this tool is simple, it can be operated by anyone who has a general knowledge of tire sizes. We have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place. I just want to know if I get bigger tires I can easily take it to the dealership and have it re-calibrated. How a Change in Tire Size Affects Speedometer Accuracy When you change out your tires and wheels for a larger wheel, you always want to respect the overall diameter (OD) of the original tire. I have bigger tires on my 97. Calibrate for larger aftermarket tires, adjust for gear ratio changes, and enjoy best-in-class monitoring and control features, all without popping the hood. Please Share,Subscribe and give us a thumbs up. The dealership is not able to calibrate for tire size they say, just for rim size. Does anyone know if the wheels that come on the Plus are wider than the base RT? I only ask because I recently picked up a 2016 RT Plus. 75:1 - unless 27-inch or larger tires are installed. This will give better gas mileage,but you can not accelerate as quickly, so it feels like the truck has less power. Each gauge uses a high-torque internal stepper motor to drive the pointer, which performs much better than the air core pointer movements from other gauge companies. I have a 2011 Ram 1500, 4" lift, 20" wheels, 35" tires. jandrews, May 31, 2010 #2. Not much to worry about unless you want to get the speedometer dead accurate. But the one that matters to the speedometer calibration is the dynamic loaded radius (DLR), the axle-to-ground distance that exists only when the car is being driven at speed. Gene advised me that when calibrating the speedometer, you must know how far off your speedometer is and what gear you currently have. The circumference is the distance around the outside of a bicycle wheel, which you need in order to properly calibrate a bicycle speedometer, odometer, GPS or computer. The dealers used to be able to do it, not sure if they can on the newer trucks. If you have upgraded your Chevy CK Pickup, do not forget to calibrate your speedometer in order to have adequate information about your speed. I have a 2007 silverado 2500 HD and upgraded to 265-75-16 tires and now speedometer is off about 4mph. This video shows how to correct your speedometer if you have changed gear ratios or have changed the size of your tires. Larger tires will make the speed read slower than actual speed, and the odometer will add less mileage. Now lets says that Dan wants to throw in some 4:10's, now, how does new gears effect the adjustment? Better brake out the pencil/paper and the calculator,your going to need it to offset the rev's per mile of your tires. Your speedometer will read in a percentage difference in the rolling radius ratio of the tire you currently have VS the stock tire. 1995 4 wheel drive Chevrolet automatic transmission. Large Inventory of New. Put the finishing touch on your lifted vehicle with Rough Country's Speedometer Calibration Device! This easy-to-use Speedometer Calibrator helps you quickly and easily reprogram your vehicle's speedometer to match the output of your larger tires. If you divide by 3, multiply by 7. Find Speedometer Recalibration Devices and get Free Shipping on Orders Over $99 at Summit Racing!. But you can get it fixed to get it back accurate again fairly easily, it just means changing out a plastic gear for the cable driven ones and a computer adjustment for those with the speed sensors. Is it possible to recalibrate it?. Find 1 listings related to Auto Speedometer Calibration in Norfolk on YP. 2017 F150 3. GM / Dodge / Ford, Ratio Adapter, Select Speed Up Rate #54RA2. The calibration of a vehicle’s speedometer and odometer is based on the circumference of the vehicle’s factory-installed tires. There is a limited range of available settings, but it should work as long as your tire size change is not too drastic. Yes we have the Used 2016 Chevy Sonic LT FWD Sedan P25984A that you want, it is right here for you to see. To fix this. Then retest to confirm the settings are accurate. A programmable electronic speedometer operates in a similar way but has the added feature of user-directed programming. Speedometer Calibration for those with bigger tires Here's the deal Discussion in '3rd Generation Ram Forum (NO engine/transmission topics) Archive' started by daytripper63, Feb 13, 2006. If you don't know your tire diameter, calculate it below using the P-metric sidewall designation. Had another bad experience with a Chevy dealer this week. I've had 255/55/18s before which are 29" in diameter instead of 30" that I have factory only threw the speedometer on the high side by 3% which made no difference to me. I’m a little spoiled because I own a “bike-shop ebike” that I ride to work daily. I have calibrated Many Many Chevys this way. To understand how to do the calibration you have to understand how the values are being used/calculated. You will also have to measure side to side clearance to keep the tire away from inner fenders and other sheet metal. I got bigger tires, 33", on my truck. Obviously a Chevy odometer calibrator will save you money, both in repair shop diagnostic fees and potential speeding tickets. If you are planning on, or have already replaced your original equipment tires with a different tire size, it is important to remember that changing your tire size can affect the accuracy of your speedometer. If I were to get difference size tires on my taco do you know if the dealership will adjust my speedometer to reflect the correct mpg? It's not the end of the world. So now I'm having to pay a $200 ticket and get my speedometer re-calibrated. 7 with 60 psi, but at 30 Psi they are not. 2018 Speedometer Calibration Discussion in 'Audio I have a chance to get a larger set of wheels and tires for my 2018. Just got new (bigger) tires put on my 2015 2500hd 6. Chevrolet Performance engineers provided the proper offset and brake clearances, while WELD Racing optimized the wheel to be as light as possible. Follow these steps to properly calibrate a speedometer by yourself. This is because larger tires cover more ground in one complete revolution. My speedometer reads about 3 mph faster. 42 gears and the stock 16" tires to much larger, newer 17" from a Yukon. It will be necessary to reprogram the PCM for speedometer accuracy. 25 mph, even though your speedometer will still show 35 mph. Please Share,Subscribe and give us a thumbs up. This module is perfect for vehicles with computers that don't allow for tire and gear ratio correction, or to re-calibrate for tire and gear sizes outside the range of programmers. Know exactly how fast you're going with the Hypertech Speedometer Calibrator. Photography: as well as a calibration key. The tire/wheels that are on it now are 225/55r17. it actually reads a bit higher then actual speed. A month or so ago a mechanic told me that my "speedometer gear" was leaking, whatever that means. Does anyone here know of an inexpensive way to calibrate the speedometer on a 06 tacoma? I put bigger tires on and it's off like 2-3miles. Know exactly how fast you're going with the Hypertech Speedometer Calibrator. This also affects the odometer. 10 gears and stock tires by a Hypertech Power Programmer , then why was my value 5. High quality "performance look" gauges feature the finest air core movements available, glare free lighting, stylish flat glass lenses, red pointers and polished stainless steel or gold bezels. Remove the knob. I'm running the full performance mode and not pushing the throttle, which is very responsive when you do—at the cost of fuel consumption. If the shift indicator light came on, everything would work fine. it's saying I went further than I really did). I put bigger tires on my 00 Sierra (305/70R16 Nitto Terra Grapplers for those who are wondering) and would like to get the speedometer reading correctly for two reasons. Do not get a programmer just to reset the tire size, like said above you should be OK on a 33 and below tire but the 14 is a new animal and we haven't seen much of them yet to know what works and what doesn't so you may end up being a tester for us if you get one. Tire Size and Speedometer Accuracy. I have a new VSS that I have not installed yet. The odometer will be off as well as the speedometer when you add larger tires. The Hypertech Speedometer Calibrator keeps your gauges running correctly on your modded vehicle Compensates for gear changes, larger wheels/tires, and other aftermarket add-ons Depending on your vehicle, choose between the Speedometer Calibrator or the In-Line Calibrator Module:. The Tech2 does not allow for any calibration adjustments. For instance lets say you change your tire size and it alters your speedo by 5%, at 50 mph it's off by 2. 2L V8 and 4. The speedometer now show about 3% faster than actual speed. You need to calibrate the gears in the transfer case to obtain a gear ratio of 2. Enter the value on the left, press Compute. Reviewed By Paul S (Saratoga Springs, NY) Reviewed for a 2017 Chevy Colorado —12/12/2017 6:47 AM. 4 (i called), not sure about 2016's my guess is negative. The Dodge Dart is an automobile originally built by Dodge from 1958 to 1976 in North America, with production extended to later years in various other markets. Enter the new vehicle tire size. Press the button again and drive the distance prescribed by the speedometer manufacturer. Like mentioned, it's just a matter of if you care to account for the difference in your head. The bigger issue is the odometer. Calibrate Speedometer: Suburban Car Forums. After doing all of this, obviously my speedometer is out of whack. However, so is the change in the speedometer calibration. I got bigger tires, 33", on my truck. Has anyone here used FORScan to calibrate the speedo for larger tires? Any hints or tips would be appreciated. As for adjusting the speedometer, no. So if you have 18- or 19-inch wheels and want an extra set of wheels for snow tires, it could be a good idea to go down to 17- or 16-inch wheels. I started at. The Flashcal for Truck is a product designed to give features and calibration tools to truck owners at a great price. Larger tires allow you to venture into territory that would be unreachable with factory tires and stock suspension systems. Calibrate Speedometer: Suburban Car Forums. Most members that have investigated, say it comes from the factory off 3 to 5%+ to the high side with the factory size tires. The vehicle does not self calibrate. Rim Width Measure from the inside of the outer lip at the bead seating point to the inner lip. I know my speedometer and mpg computer calculator are off. Recalibrate for Bigger Tires Oct 18 2012, 4:27pm The only question I have at this point, after leveling my truck and putting on 285/70/17s, is what is the suggested way to recalibrate my computer (speedometer, odometer, Avg. There are software kits to reprogram these systems and it is recommended you look into them. If your tire height has not changed, enter the same value. SCA Hood Vent. First off, a wheel/tire does a certain number of turns per kilometer. 2009 - 2014 Ford F150 - Speedometer Calibration after Level/Lift w/ Larger Tires - I just installed the Bilstein 5100's and larger tires, 275/65/20 Nitto Terra Grapplers. Your vehicle's computer is designed to track the speed based on your stock tire height. Also I'm assuming bigger tires would effect the total mileage number as well right?. There are several common causes for a speedometer to stop working. Like mentioned, it's just a matter of if you care to account for the difference in your head.