Your current tire is 31" in diameter.
Your stock tire was 28.87" in diameter
So... Current tire size divided by stock size = the % over.
31/28.87=1.073... Or 107.3%

To calculate your current mileages simply add 7.3% to your current speedo & odometer readings (multiply them by 1.073).

That said, you are only 5mph faster at ~68mph. All other speeds will be a different amount off.

HTH

Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
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