Quote Originally Posted by JITB View Post
disregarding the tires, because that can be changed. but just by doing numbers the sizes are identical. The offset, and width of those 2 sizes cancel each other out.

half a inch is about 12-13mm, and you have 30mm-15mm = 15mm,


But that 235 that guy has is way to wide for what hes trying to fit, he could easily get that with a 225/40 it woudl be perfect! Bu ttire brand and all that comes into play......its just too much...lol
when measuring offset its from the center of the wheel. the half inch is only 1/4 on each side.

The 18x9.5 et30 will have 6.4" of backspace with 3.1" from the hub. The 18x9 et15 will have 5.6" of backspace with 3.4" from the hub. So the 9.5 should be recessed .3" more than the 9.




Also I think the fronts on the lude I posted are et35 so theres a little more.