OK, I was going to order some black steel wheels from Summit this week for an '83 pickup, but they offer 2 different sizes of Center Bore Diameter. Would I need to order the 4.280 in., or the 4.250 in. ? I'm going to run 33's or 35's x12.5. What would be the advantages or disadvantages in getting 8 in or 10 in wide rims? This rig will be a daily driver/trailrig, but no rocks since I'm in MO. Thanks.

 

Pull one of the rear wheels off and measure the diameter of the hub center (on the axle, not the wheel.) All you need is to be sure the rim hole is that big or bigger. It doesn't center the wheel so it doesn't have to fit tight.

How much lift ya got? No lift and 33s will rub a little with 8"s, and will rub horribly with 10"s. No rubbing with about 3" lift and 8" rims.
35s will not fit at all with no lift. With 3 or 4" lift will still rub a lot with 8" and won't fit at all with 10" (not feasible really.) .

 

I'm in the process of lifting it 3" or 4" right now with new springs on the way. I'll also do a 1" or 2" body lift to make room for a header.