Quote: Originally Posted by Dman_23
it seems to me that the Kumhos(225) are smaller than other brands(225) because i have seen multiple 225/45 tires mounted on the stock SRT-4 rim and only the Kumhos looked right, wonder why that is??
It's very likely that the Kumhos are smaller than other 225's. My 205-55-16
Goodyear Eagles have a half-inch wider tread section than the stock 205-55-17 KDW's. My 16's are on 16x6.5 VW Beetle steelies, which are a half-inch wider than the stock rims, but I don't think that this would make the tread section wider (maybe flatter..?).
The sidewall aspect ratio itself changes the size of the tire, even if it's the 'same' stated width, but most of the 15 and 16 inch '205' tires I've seen were very close to the 17" KDW for tread section width. I'd say that my Eagles are wider in tread section than any other '205' tire I've seen (be they 15's, 16's or 17's).
Generally, any 225 tire should be on a 7" wide rim, but if the Kumhos are 'smaller' enough, they may in fact be fine on a 6" wide rim for practical purposes (but that's not a use that Kumho's lawyers would encourage!).
A 225/45/17 tire
could be specially engineered by a tire company to be safely mounted and used on 6" wide rims, but I'd bet that this kind tire would not work well on 7 or 8 inch wide rims, and it's probably not economically feasible to sell a 225/45/17 that works
only on 6" wide rims
...
