These are 15" x 6" aluminum modular wheels with 215/75/15 radials (I forget the brand but they are 'trailer-service' tires.) They are O.E.M. on the Work-n-Play toy hauler I just bought. Two of the wheels has minor oxidation and the manufacturer warr. them. I just want enough out of the set to be able to buy me a new set of 10-ply tires to go on the new wheels. (these are 8-ply) The bolt patt. is 6 on 5.5" (standard G.M. I think?) Lug-nuts and center-caps are NOT incl. BTW, tires prolly have approx. 1,000 mi. of use. Thanks for lookin', Ed.