Newbie question (Stock rim size)

[454 blazer]

Hey guys, any of you out there no what size rims are on a stock 1977 K5 cheyenne ? I broke this blazer for spares around a year ago , it looked like it had a full option pakage i,e roll cage , custom interior , split rear (side)windows blah blah blah , im just trying to work out if the rims on it are stock or not , all i can work out is that the rims are 15 inch, what i would like to do is put my 33x12.5x15 tyres on and custom paint em just not sure of the width, any ideas ?

 

[lectric80]

Stock wheels are either 15X7 or 15X8, I can't remember for certain. Either size should be fine with 12.5" wide tires, although the 8" wide wheel is going to put less stress on the bead. If you have a picture of the wheels we could tell you if they are a stock style wheel.