I dont know if anyone is still looking at this post but i was looking for some help. I've got a 04 GT with 17x10.5's with 315's and a 94 cobra with 18x10's with 275's. I'm gonna sell the 04 and i wanna use the 94 cobra as a weekend / track day car. I was planning on switching the wheels because i like the wider 17's. I went to put them on and the wide 315 ran into the right rear control arm ( i think ) but just barely, i was still able to bolt it up, but i'm sure it'll rub if i started driving. I want some help here, i really want those wheels and i'm open to spacers, but it is going to be driven hard i dont want anything dangerous, but the extra traction would be helpfull. I'm not too concerned with the wheels sticking out with 1" spacers if those are the best quality. I see Hub centric ones are 5mm which i think would be a problem with the above mentioned suspension shifting. So i guess its just a question if 25mm hub centric spacers would be safe for doing track days. Any help is appreciated.