ok so i have a 91 f car, plane jane stock firebird. plan on redoing all of it but its a daily driver at this point. the tires that came on the car when i bought it are shot so i wanted to replace them with new rims and tires. GroupAwheels.com says that 18 x 9 with 275/35 r18 will go right on a bone stock gen III in the front, and an 18 x 10 with 295/35 r18 will go right on the back no nuthin needed right backspacing, bolt pattern and fitment. Well in fine print it does say to check wheel fitment before installing but the website claims it is made for the 82 - 92 firebird/ta/camaroe. anyone out there know weather or not this will work cause it sounds great i just dont wanna spend 1800 for something and have an issue. cause it carries a 20% return fee. anyone please advise if ya know it fits.

 

Those size tires will easily fit....As log as the backspacing is god on the wheels. I'm currently running 275s up front & I've run 295s on the rear.

It all comes down to the backspacing, which you didn't provide. So we can't say much more than what I just said.