Lug Nut Caps: Where can I buy new/used ones

 

You can't, should start using the proper size socket which is a 1 1/16th. 6 point.
At this point all you can do is buy either some good used lug nut or new ones for around $22 a piece.

 

I was down at the wrecking yards near the San Diego/Tijuana border yesterday. La Paz (Auto Wreckers) had a bunch of Discoverys and there were lug nuts laying all over the place. I bought some a few months ago, why I am not sure, I think that they charged me $2 a piece. Talk to Miguel, you need to work him a bit. It is somewhat like a mid-east bazaar. Good Luck. Phil