AMEN! I agree “it shouldn’t be possible.” It happened to me twice. On a 15” inch bullet hole mag (now scrapped) that I used to use as a spare for the Road Ranger, I believe the holes were hogged out or over-torqued/pressure-spread-out for some reason. Keep in mind all the stuff I bought was used.
When I made my mount for the spare, using original lug bolts on my backing plate, I had to put a half-inch lock washer underneath each nut to hold the wheel snug. On the Road Ranger, if I had a flat on one of the critical front and first/rear/drive axles, I would have moved one of the floating axle tires over, and used this funky spare on the floating axle, just to get me off the road. Fortunately, I never had to test it before I found an undamaged mag.
This is a good spot to also comment on how many people don’t know how to use a torque wrench. Don’t jump, I’m sure you guys do, this is offered for the newbies and young kids who don’t have the gray hair yet! On the 15, I think it may be that it was just over torqued too many times. I have seen a lot of tire shops who crank down on the lug wrench, and then check if it’s “tight enough“ by putting a torque wrench on it to hear the click. If the nut doesn’t move when you’re applying the torque wrench (before the click), it has been tightened too much. The torque wrench should click at the right point when the nut is turning. If you use a 220 pound impact wrench on the aluminum wheels, it can deform the lug holes. More on torque wrenching another day.
I had the same thing on some 14 inch bullet hole/outlaw mags. I picked up about 20 for the projects for little money on craigslist and such, but on those I think it was the funky Lug nuts I was trying to use. They had a particularly long, narrow cone. They’d hit the brake rotor/backing plate about the same time they snug down the rim.
I say “amen,” again. I completely understand that theoretically, this should never happen, but one of the unfortunate things about gray hairs, is you see a lot of crazy stuff. I just threw/throw it out here so
@lil_Blue_Ford can check it.
Always, hope it helps!