Three nub versus four nub with disk brakes

[special-K]

Originally Posted by engineer_gregh

Thanks special-K. The guy says they are the original wheels off his 72. I'm going to try them and will post what happens.

Let us know how that works. Always something to learn. It seemed a great way to tell the early drum 6-lugs (all GM 1/2t) from the '71-up K/10 wheels. But there was that member who showed he mounted some 3-nubs on his K/10 with discs. Other companies made wheels besides the OEM suppliers and maybe they had/have centers made to fit discs but their stamps have 3-nubs. The question doesn't really come up for 5-lugs since all those "factory" wheels were made for disc brakes.

I would see these 15 x 8 5 on 5 steelies are a swap meet, but they had 3-nubs. I passed them up a few times. I figured they were from an earlier big Ford car with drums. But also one bead was pretty rusty, or I may have gave them a try.