can the factory calibration for mileage be re-set ??
what is the formula for hand calc, on 35" tire ON 20" RIMS ??

 

Not sure if this is the info you are requesting....I'm assuming its speedo calibration you mean...

If you go to tyretraders.com ...put in the original tyre size etc..and the ones you have fitted...click evaluate..it'll tell you the old & new speedo readings..

Hope this helps......