Im planning on running Centerline Coronas on my GTA. I want to do 17.9.5 in front, 18x9.5 or 18x10 in the back. Im not going to drop the car, its going to be left at stock height. what would be the correct backspacing for the rear, and the right for in front so that the tires dont rub? oh yea, do they have drag radials for 18x9.5 or 18x10 rims?

 

If you went with 9.5" wide, the correct backspacing is 5.25" front and 5.5" rear. I used to think 5.5" was correct for the fronts, but ChevyKen let me know that 5.25" was the proper measurement. I think you should try to do a search to double check. Or if you really want to know for sure, search the web (google it) for Skulte Adapter FAQ (he's also a board member here). He has an entire article that will explain how to find the correct backspacing.