View Here : Determining Tire Size
Tire Size Change Gear Ratio Calculator. This chart can be used to find a new gear ratio after changing tire size.
Android Tire Size Calculator. The same data on the go. No internet needed. Free app, no ads. Please enter the current size to see matches and a comparison. Click [Show] to open charts and add wheel sizes to the matches table. Ratio: 25 30 35 40 45 50 55 60 65 70 75 80 85; Wheel Size 12" Wheel Size 13"