Sorry, the 2005 35AE came with 5-spoke 18x8/18x8.5 wheels.

I run 245/40R18 front and 275/40R18 rear on my track 18x8/18x8.5 wheels. The 245s on the front are very square, and look a lot better than the 225s on the front. The 275s are a bit wide for the rear wheels, but actually don't look that bad -- and actually work very well.

 

Sorry, I misread your first post, must have been tired or Anyway, IMO you can safely run 265/40/18 on your 8.5" rears and as I said 245/40/18 in front. I would go no bigger than 265s in back. Again, IMHO, 275 is just too wide a cross section.

Lou

 

That makes sense, a 245 on a 8" wide wheel is a very good size, but what about dropping down to a 265/40 out back instead of the 275, which is obviously too wide for a 8.5 wheel?

 

Larger tires on the back are alway nice but the 275's on your OEM wheels are
at least an inch too narrow. If you want to run that size tire go with quality
aftermarket wheels.......HRE....Works....Volks!

 

Here we go again . . .

The ideal setup for OP's ZR with stock suspension and OEM staggered rim sizes is 255/40/18 in front & 275/40/18 in rear. Without going to a "square setup" on all four corners, this is as close to getting a neutral & balanced handling as you're going to get (20mm difference between front/rear instead of 30mm difference with 245/275 setup). In addition to the performance gains of this setup, OP will be able to fill-in the large fender gap inherent on stock suspension (thus, the bonus aesthetic feature with these tire sizes).

 

And 265/40s are made by...?

The common size there is 265/35, which is obviously too short. Next size up is 275/40.

The only challenge I have with the 275/40s is the people who say that they are "too wide" without actually looking at them -- and the way that tires have fit almost every other car.

 

30 second search brought up 18 choices on tire rack. That should suffice.


http://www.tirerack.com/tires/Compar...t=All&x=62&y=2