[jocko]

Agree w/Leon - same impression w/aftermarket 17" (stock dia) wheels. I've had a couple, and all were flimsy - don't believe they have the metal core of the originals - which is why pristine, uncracked originals demand a high price. I'd still buy an aftermarket 17" wheel over a non-GM wheel, I just prefer the original look and feel. I haven't owned a 15" one, but yes, they should be less flimsy, even if constructed the exact same way as the aftermarket 17" ones. One aftermarket wheel I do like is the cushion grip 3-spoke that some of the dealers sell - but still prefer the stock wheel over anything.