Scott Galaba The following motorsport application requires an Internet browser that supports JavaScript. If you receive a JavaScript Alert message then your browser supports JavaScript. This program is for comparing original equipment tire size to alternate after market tire sizes.
All calculations are round up.
Calculations are to be treated as approximate only, due to variations in how tires are manufactured. The tire tread width, sidewall ratio, and wheel rim diameter from each of the two tires to be compared and a speedometer reading to be used to compute the effect the after market tire size has on your speedometer. Key in the following information from the tires being compared. When you are done comparing, check out the Gear Speed Calculator Program . Key in the following information from the tires being compared.