I am a new 06 G Coupe (metallic silver) owner - in market to get wheels and tires as well.

I was looking to go with 20" rims with 8.5/9.5 setup with 2"/3" lip for front and rear tires with Stern ST-2's (chrome polish).

255/30/20R
285/30/20R

(or perhaps 35 instead of 30 - not sure)

How do I know if this won't void my warranty. As a last resort, I can always call up the dealership and ask. Thought I'd bring this up on here and get an opinion from folks who might have gone thru this hassle already.

 

Well, thanks a lot for replying you guys )

Anyway, for people who want to know...read on
I called the dealership today and asked what specifications you have to abide by when you buy new tires and wheels, and still manage to keep your warranty/extended warranty intact.

Answer: As long as you don't have rear-stear drive, you are free to put on whatever kind of wheels you want.

Hope this helps.