I have a 1965 coupe with the 289. I have factory 14 x 5 wheels on it now and I want to widen the rims and tires. I am not sure if i should use a 14 x 6, 14 x7, or even a 15 x7 wheel. I have had several people tell me different things. I am trying to find out how wide i can go before the tires begin to rub. I would appriciate any help or insight you might be able to provide me. I am also unsure as to what the best tire size would be as well. Please help me out.

 

AT the top of the first page there are some common questions. Here is one:

https://mustangforums.com/m_538659/tm.htm

 

I have a 66 cupe and 14" by 8" rims and I belive they are 225 tire size (I think) and they dont rub on my car, yet again its a 66 so im not 100% sure.