Im wondering if a set of 275/45/16s will fit on the stock 16x8 "swirly" rims. They have 245/50s on it now and i want a wider tire on the back.


BTW im new here and just bought the Formula thursday, im loving it

I'm thinking you need a 9.5 width rim... but go to a tire place and ask to be sure.

NVM i dont think anyone even makes 275 16s, discount tire dont have any and tirerack only has slicks soooo thats outa the question now, oh well now ill just HAVE to buy WS6 17s haha.

What wheel width is required is determined by the tire manufacturer. You need to pick a tire, then see if the manufacturer recommends your stock 8.0" wheel width. As noted in the first response, there just aren't a lot of wider 16" street tires. Road racing slick are available, but not true street tires. BFG makes a few wide 16" tires in their "Radial T/A" series, but that is an mid-performance level, all-season tire. And, most of them are too large in diameter to fit a 4th Gen.

If you like wide tires, go to 17x11's with 315/35's on them.....

on mustangs the 315s look amazing, but i dont like how the rear looks on the firebird with that wide of tire, 275s are bout perfect, maybe the rear need the trans am deck to finish the look i dono. but DANG those are some meaty tires