Sorry... was misled by the guy wanting to sell the rims. I did call a local tire distributor and he told me that for 16" rims, the tires are sized 235/75/16 etc..... I'm trying to decide whether to restore my oem rims/caps or go to aluminum rims. I like the oem look, but have seen some american racing rims that look nice. Has anyone out there bought these replacement centercaps for the 80's 6 lug wheel ??. Chevy Duty has them but they are made out of a type of plastic. Look like oem, but much less expensive.