Anyone have this rim setup 19x9 front 20x10 back???

20" is a little too much for a sports car. IMHO

That will also mess around with your DSC.

And its not good for the mileage.. nor speedo.. lol

if its not good for a sports car then what are those wheels that come on gt3?

also if 20's are too much how about 19x10?? cause i really love that deep deepdish back look on a rear wheel.

if its not good for a sports car then what are those wheels that come on gt3?

Are you designed like a porsche? I didn't think so.. Besides 20's are quite heavy and would put strain on your suspension joints.
Just FYI Gt3's come with 19's..

For the second post about deep dish.. order a pizza.. lol jk
You have the wrong car for those types of wheels. This isn't a low offset car like Supras and Z's
Lowest I have yet to see is maybe +30 on 9.5's

uh....why??

It's not worth it for the looks. The 8 already rides high, it'll look like a monster truck with those wheels. It'll also kill your acceleration, make you understeer, throw off your speedo, and jack with your DSC. It's a whole host of problems for the "deep dish" look. When you buy new wheels, get as close as you can to original size and offset. Width doesn't really matter as long as it fits in the wheel well without rubbing.

Wrong section for the loss?

^ lol
Here you go buddy:
http://www.rx8club.com/showthread.php?t=133500&page=11