doubleurx

Hi, new here with my first post:

Like the title says, is this size OK on the fronts. This size matches the rear 255/40/17 diameter exactly. It looks like there is room to add the additional width. I was just curious if anyone else has this combination and if so are there any issues?

Thanks

Rick964

I ran those sizes on my 90 C4 with no problems up front. On the rear I had to add 3mm spacers to stop from rubbing on the oil line on the right side. My wheels were 996 7 & 9 x 17 with 55mm offets.

doubleurx

Thanks Rick. I currently have the 255's in the rear and don't get that rubbing issue. I gues I will be going for the 225's up front.

Rick964

Most people don't seem to have the rubbing issue in the rear either, but since these cars were handbuilt they are all a little different. I have heard of a few people with the rear rubbing. My fronts rub a very small bit only at full lock, I know there was a factory steering stop update recommended for upgrading to 17s to prevent this, I'm not sure if that part is already on a 91 or not. Part numbers are Steering stop: Part Number 964 347 325 02 (two required) & Rubber valve: Part Number 900 265 001 50 (four required).

I should also mention that my car is on stock shocks/struts with H&R lowering springs, the car sits about 1" lower all around. I'm sure fender rubbing will be somewhat related to ride height.

hawk911

I just threw 225/45x17 on the fronts, and no issues with rubbing. They look great, and take up all the extra space in the wheel arches.