I notice they don’t state they’re hub-centric either. All spacers that are that I’ve seen clearly state that in the description. I’m thinking what happened here was the spacers were installed wrong ie either the wrong lugs were used in the wrong location ( aluminum lugs were meant to be used with aluminum studs) or they weren’t properly torqued onto the hubs, or they’re not hub centric which is known to be disastrous on our trucks. I used Supreme Suspension spacers and the instructions state to torque them to 140 ft lbs, then remove the wheels after 50 miles and re-torque them as well as torquing the wheels themselves to the spacers to 140 ft lbs. They are hub centric which is important otherwise all the weight is supported only by the studs instead of the hub itself like intended. And the studs and lugs sure weren’t aluminum.