Tire Size Calculator - Tire & Wheel Plus Sizing
 

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I came across this and found it very helpful.

Tire Size Calculator - Tire & Wheel Plus Sizing

Just enter your vehicle info or tire size and up to 4 other sizes you want to compare it with. It then compares the tires selected giving all relevant info including speedometer error.

Quick and easy...

:)

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You dont by chance work for 1010 tires do you? :D

Interesting that the calculator shows the revs of the tire per mile, I've always wanted to know that :p

Pay attention to the 3% difference between REVS-per-MILE vesus the REVs numerically-derived from the tire's circumference...the result of tire rolling-diameter being slightly smaller (due to weight causing tire flattening at bottom) than tires simple measured diameter.