Quote
Quick tire calculation:

New tire size / old tire size = % of Difference

Example;

265 / 225 = 1.17777 or a 17.8% increase in tire size.

<img src="/forums/images/graemlins/kewl.gif" alt="" />


Actually, that math is false. 265 refers to the section width of the tire, not the height. So your math only works if the ratio for both tires is the same (i.e. 265r70 and 225r70) **AND** the wheel size is the same, which we already know to be false (16" vs. 15" stock).

So I still suspect that we're closer to 20%. I made an assumption in my initial estimate that the ratios were the same (as did you) and then added a few percentage points for the wheel height difference...

Brian K. Gallus
I have nothing important to say.