I am looking for 17" rims for my car. I want 17x9-10" on the rear and the biggest I can in front. Whats the biggest tires I can run too. I want the BFG 315/35 for rear and I guess 275/40 for the front. I am thinking about centerline rims that are 17x9.5 but they also come 17x7 and 17x8. I would like to get away with 17x9.5 all the way around. I have an 88 GTA.

 

275/40r17 on 17x9 is about as big as you can go up front without rubbing or interference. 315/35r17 on 17x11 in the rear with some very minor clearancing. 315/35r17 will not mount on a 9 or even 9.5" wide wheel. However, 285/40r17 will work. I've got 17x9 with 275/40r17 all the way around with no problems.

 

Yes that 315/35 R17 tire recommends a 10-12" rim. Is it possible in anyway to mount oit on a 17x9.5 rim? I really want a huge tire on the back but cant find any other street slicks that will fit on a 17" rim. Will that .5" deficit make a huge difference?

 

I doubt it will work. Perhaps if it had a taller sidewall like a truck tire you could do it, but not with the small STIFF sidewall of that tire.

 

I bought Nitto NT555 G2 Summer UHP Radial 315/35R17 for the rear and 255/45ZR17 for the front. What rim/wheel offset, backspacing dimensions do you recommend for these with 17x11 and 17x9.5?

 

The answer is everyone in these 20+ year old threads has died from old age, Covid-19, getting ate by sharks.

 

Oh, there's a lot of us still here.

While certianly not an "official" stat, for the rear of the car, many people consider a 275mm tire on "0" offset to sit about perfect. From here, depending on details of your specific car, room to the INSIDE can get tight, and you might need to massage a little for proper fitment. If you go OUTSIDE, you start to get that unnatural look where they "poke" out beyond the quarter. Some people like that. You can ABSOLUTELY go wider that 275, but exactly what your offset is, is going to be up to you to determine. Still, a 275 on a 0 offset gives you a great starting point.