first off, this offset is a quick google. I know nothing about these wheels as they have been in the attic forever! they were taken off I know from a customer for some curbing on the front side of it. wheels hold air. would be a great set of wheels if your looking for some spares or something. they are 18s. I want to say they are 8 in width. 5 bolt of course. again this was another quick google but ppl seem to use these on (Cobalt SS/ION RL/Malibu MAXX). again its a quick search. I have very little info on the specs of this wheel so please do your own research. if you get them and they do not fit your car then there are no refunds. located in McDonough off summit racing exit. 100 bucks.