[19673ontree]

tires are 225x75x15'' , to get truck wheels just take a measuring tape with you and find some that have the GM stamped in the center of the wheel then measure 5''s from center of one lug bolt hole to the other , car's are 4 3/4 ,
and if you want to be even better than that just take one of your front brake hubs off and take it with you then use it and fit the lugs into the wheels lug bolt holes to be sure , that way can't fail ,