Calculate RPM & Tire Height | CompleteOffRoad.com
Enter Ratio, Tire Height, and Speed (mph) then click Solve to calculate RPM
For Specific Transmission Ratio
|Recommended Towing RPM|
|Ford Diesel (Non-Turbo)||1600-2500|
|Ford Diesel (Turbo)||1400-2200|
|GM Diesel 6.2L||1800-2800|
|GM Duramax Diesel||1800-2400|
Tire Height Calculator
Enter Tire Width , Aspect and Wheel, then click "Solve" to calculate Tire Height.
Street tires are rated using three numbers for example 225/70R15 or 255/70/15. In our example 225 is the Width in mm if the tire was measured from the bottom of bead to bottom of bead. In our example 70 is the Aspect, which means that the sidewall is 70% as tall as the tread is wide. In our example 15 is the the Wheel, the size of the wheel in inches, also called rim size. Placing the example numbers in the corresponding fields you will get a Tire Height of 27.4. Place your corresponding numbers into the fields below to calculate your tire height.