Re: flatten out wheelwell
The standard answer "biggest wheel and tire combo that fits is 275 on a 9.5 wheel". You didn't say what diameter wheel so I'll guess 17 or 18s. Some guys have squeazed on up to 295/35-18s on 10 wide wheels but that takes a lot of nerve and patience. To get those to fit you need to roll lips and smash the inner wheel house in. Before you attempt anything that big keep in mind that 275s on 9.5s rub on some cars. Depends on the car and the condition of the car as well as what body panels if any have been changed. Do a search this is constantly discussed.