Speedometer Calculator, Our tire size calculator will also supply this value.

Speedometer Calculator, Speedo Calibration Calculators Due to the numerous speedometer calibrations found on classic vehicles, from vehicle to vehicle and throughout their life, there may be a need to have yours recalibrated to read accurately when fitting one of our gearbox kits. Use this simple Gear Ratio Calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. Enter your factory and new tire dimensions for instant results. Find out how fast you are really going with different tire sizes using this online tool. It will do all the work for you. If you dont know your tire diameter, calculate it below using the P-metric sidewall designation. This calculator helps you determine the true speed of your vehicle with new tires. Ever wonder how far off your speedometer is with your new bigger tires? I'm using a simple ratio calculation, so this info will only approximate your corrected speed and depends on the accuracy of tire size diameters (assuming nothing but tire size has changed). Enter your original and new tire size, and compare the speedometer reading and actual speed at any MPH. Stop guessing and avoid speeding tickets with precise speedometer calibration. We Fix It Right or It's Free! 1-800-446-2880 Changing your tire size affects your vehicle’s speedometer accuracy. Next, open the hood and locate the speedometer cable that is attached to the transmission’s tail shaft. Free Shipping. If in doubt use manufactures posted diameter. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. Speedometer Correction Calculate the difference between your speedometer reading and actual speed after changing tire sizes. Alternatively we have electronic speedo options that can be set in the vehicle. May 8, 2020 · Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this Mustang Speedometer Gear Calculator! Speedo Gear Calculator by Wallace Racing Todays date is 7/25/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers 940, 960, 1000, or 1020. Speedometer Correction Calculator When you change your tire size, your speedometer reading can become inaccurate. When you change tire sizes, your speedometer and odometer readings become inaccurate because they're calibrated to your original equipment tire circumference. Apr 11, 2026 · Gear Ratio Speedometer Calculator Calculate speedometer correction, actual vehicle speed, and required speedometer gear teeth for any tire size or axle ratio change. Use the Tire Height This calculator is designed to determine the difference between the indicated speedometer speed and the actual speed after a change of gear ratio on the ring gear and pinion. If you know specific information about your vehicle (gear ratios . Speedometer Gear Calculator Try this handy custom calculator. Read on to understand how the pair of speedometer gears works to give you an accurate reading on your vehicle dashboard. All auto brand Instrument cluster repair & speedometer repair, servicing nationwide customers. Use this free Speedometer Calibration Calculator to instantly see how fast Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when upgrading tire sizes or changing axle ratios. Most older GM speedometers are 1000. Find the driven gear and count the number of teeth on it. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. ACTUAL SPEED CALCULATOR Speedometer ratio adjustment calculator. Built‑in P‑metric converter. Enter your original and new tire dimensions or diameters directly. These numbers correspond to the number of revolutions the speedometer cable must make to register one mile on the speedometer. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. Our tire size calculator will also supply this value. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. Calculate the correct speedometer driven gear based on tire size, axle ratio, and drive gear. May 1, 2026 · Speedometer Calibration Calculator - Determine true speed after tire size changes Use this Speedometer Calibration Calculator to find your true road speed after changing tire sizes. Our Speedometer Calibration Calculator shows you exactly how tire size changes affect your speed readings and helps you understand the impact on vehicle performance and legal compliance. Unscrew the cable from the transmission, then remove the gear housing cover to expose the gears within it. yg, 4m, mo8qp, xky1j2, amv, kr4w, mcee, xwamzu, k0ci3r, tlkgl,