Guys with 20's, answer a simple question!
 

I'm looking at some 20in Gt-c's in a 8.5 and a 10.5. I know I'm going with a 245/35 in the front, but do I go with a 275/35 or 275/30 in the rear? I don't wanna lower the car, either. So guy's with 20's, what did you do?

I've seen they go with 285 so 275x35 woudn't be a problem.

Cool. Anybody else wanna chime in?

I'm currently running 20x9(F) & 20x10(R) with 255/35(F) & 285/30(R). I've had no issues with TCS/VDC, rubbing, & didn't have to roll my fenders. Since you're running 20x10.5(R) it would really depend on your offset is to determine the best tire size. I've heard some people running the 20x10.5(R) size & ran into issues with rubbing which required them to roll their fenders.

Check out this site.
http://www.1010tires.com/TireSizeCalculator.asp

I'm running 245/35 & 275/35 except I have 8.5 wide front and 10 wide back. The tire might look a tad stretched on a 10.5 depending which brand you go with.

guys with 20's, Jeez on a good day,with good lighting it, maybe looks ei..... OHHHHH, you mean 20" wheels, sorry, my mistake, carry on.....

LOL!!! Yeah, maybe I should have been more specific!!

And i have a questions in 20x8.5 all the way around is that good for the z if anyone has some pics that would be nice thanks for the input guys