Has anyone used these on their Buick? I noticed they come in both a 15x10 and a 15x4, which would be good for running big and little tires. The prices are reasonable too. But I don't know if they're visually similar to the stock Buick steel wheels and if they're the right size for the dog dish caps. They're $90/each for the 10's and $80/each for the 4's (from Summit). I'm not sure on the shipping charge, but if I have the part numbers, I may find someone locally that carries them in their warehouse to keep that cost down. Also, the 15x10 w/5.5" backspace is recommended for the A-body, but how about if there's a 12-bolt instead of an 8.5" 10-bolt?
If they're Chevy style wheels, most likely they're made for the Chevy style "derby" caps which fit inside the raised area of the wheel. The Buick dog dish caps snap on the outside of the raised area.