18x8 et38 255/35/18 all the way around?
 

Well yet another question on tire size...
I have 18x8 et38 all the way around on my wifes car (2006 325ci) with 235/40-18 on it and fits just fine.. The tires are not as wide as I would like.
I have the same rims for my car (2001 325ci) and am wondering if I can go with 255/35-18 on them all the way around with out rubbing.
Stock Tire diameter is 25.0
235/40-18 is 25.4 (wifes car)
245/40-18 is 25.7 (I think it might be to tall)
255/35-18 is 25.0
Tires she has and I want are Kumho Ecsta 4x

The minimum recommended rim width for mounting on 255/35R18 tires is 8.5" wide. For 8" wide wheels, stick with 235/40R18.

I know that is the "minimum suggested" width, but I have had 255s on 8 inch rims before and they worked just fine...

Kyle

Well I bought one tire to try it out on my spare rim Kumho Ecsta 4x 255/35-18 on my 18X8 et38 Rim... I mounted the tire and tried it out on the front and it fit with no rubbing at all!! I took it for a test ride and we also pushed front end down, and no rubbing. Tire looks good on the rim, it is a hair wider then the rim but should be good if I accidently hit the curb. I think 245 would be the perfect fix/look but I think the 245/40-18 (25.7 diameter) is to tall...The 255/35-18 is 25 diameter and that is stock height. On my wife's car when going to a 25.4 diameter tire it seem to make the car feeler slower and I am afraid that a 25.7 will be even worse.

So now that I know they will fit, here is my next question.. I have original M3 front rims that are 18x8 et47 I believe. Would it look better to have 18x8 et47 in front and 18x8 et38 in the back? If I am not mistaken, the back rims look more sunken into the wheel wells then the front. So would the two different offsets look better and would it handle alright. I know there is a lot of talk about square setups being better. Would this still be considered square with 255/35-18s on front and back? Thanks for everyone's input!!!

So here it is....
255/35-18 Escta 4X on 18x8 et38 fit perfect with NO fender rolling! They look great and do not have the tire stretch lock at all.

Kyle