Originally Posted by jaycheetwood
Explain please.. i dont own one i am just going off what i hear get thrown around.. but what do you % diff?
From the scanguage manual:
The approximate % to use for a tire size
change can be computed by dividing the diameter of the original
equipment tire by the diameter of the new tire, subtract this from 1 and
multiply by 100. For instance, if the diameter of the original tires was 24
inches and the size of the new tire is 30 inches, 100x(1-(24/30)) = 20.
Setting the value to 20% will compensate for the tire size change.
For gear changes, the formula would be 100x(1-(new ratio/old ratio)).
For instance if the old ratio was 3.55 and the new ratio was 4.10,
100x(1-(4.10/3.55)) = -15%.
Since my stocks were 28.9 and my BFGs are like 31.8
100x*1-(28.9/31.7)=8.833, I have mine set as 8 or 9 i don't remember. I checked mine with my GPS too, its dead on.