GM 5 bolt pattern. Takes sleeved lug nuts available at any auto zone, O'Reilly, etc. Appear to be from a grand national but cannot gauentee authenticity. Possibly aftermarket. Would look good on any other g body. Monte carlo, grand prix, etc.or anything else with old school 15 in rims. Dirty, but they are aluminum and will polish up no problem. 2 tires are decent 2 are not. Will accept any reasonable offer.