As I recall GM has stayed with the 6 lug bolt pattern on all of their 1/2 ton 4x vehicles. You have to be careful when trying to upgrade wheels on 4x's and other HD pickups. GM is very particular with their wheel fitment. Original GM wheels fit the hub very closely, weight is spread out between the bolts and the hub. Most after-market wheels are 'one size fits all', there is a huge gap between the hub and the wheel, this gap put undo stress on the lug bolts, potential for failure. Wm.
Last edited by Wm L; 09/27/20205:22 PM. Reason: additional info
From what I have researched, Chevy 6 bolt wheels are the same lug pattern. It's the center hole that is small on newer, late 80s and up, I tried to put my 65 wheels on my 85 hubs, rear is fine, front no good, hit the brake caliber. I was told you can use a dermal tool to enlarge the center hole on newer wheels. Waiting for a decent set of 17 inch to show up on cl, then I will try it.
