I have a set of 15" Pontiac rims with Grand Am GT 215/65R15 tires that hold air. They're off a 1984 Trans Am that I had. These 15" x 8" aluminum rims with a 5 x 4.75" bolt pattern that were on third-generation trans Am and Formula models (1982-1992). The wheel is also known as a "hi-tech turbo" or "concave" wheel. This wheel was a factory option all the way up to 1992 Firebird Formula models. I used these on a project as rollers for many rears. Tires aren't good for running down the road. I don't have the plastic center caps. Check out the pictures $160 for the set. Call or text with questions. I live south of the airport in Nampa. Call Vince 419 three Zero Six 23 two five.