Not for use with high flotation sizes, i.e. 31x10.50R-15.

What size is being run now?
/   R-  

What size would you like to run?
/   R-  
Results
Totals are in inches Tire 1 Tire 2 Difference
Sidewall Height:
Section Width:
Overall Diameter:
Circumference:
Revs per mile:
When speedometer reads:   You're going: