Im not sure how big of a tire I can run on my cutlass. Its an 85 cutlass and I wanna go with either 15's or 16's but i want the widest tire I can use without problems so I have some good traction in the rear. I know theres a way to run 10" tires in the back if you have the right back spacing on the rims but I have no clue what it is. I wanna run skinnier tires up front but not super skinny, maybe a 5 or 6 wide rim? Any help would be greatly appreciated im gettin my other motor next month and my stock 14 ralleys arent gonna be to great I dont think.