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; 09/27/2020 5:22 PM. Reason: additional info

1964 C10 with Railroad cab
60-66 Forum
1940 Chevy G506 4x4
Big Bolts
1937 GMC T14
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