They have been great for a while, took my wheel off to fix the brakes and after I was done I noticed that 2 of my 4 studs didn't catch a snag with a drag Allowing Nuts When I unbolted the wheel I found that the threads of the nuts had caught on the stud. I can't get them off the studs so I have to buy a new hub and my car hasn't been driven before and the lug nuts have never been fully engaged. I always used a torque wrench to make sure they were tightened to spec. I think there is a danger in buying aluminum grommets like an idiot