They are cracking from the lug nut holes . Very very small . I don't think it is from overloading but I do use the hell outta it .
Ask whoever changes the tires if they have any idea what caused it.
Mike
They are factory wheels . I do use a big 6' Trackless snow blower on the rear in the winter .I swear I did not see them , last time I did my Pre op check . I wonder if that could have caused it . I know the blower is damn heavy .
Guess I better plan on ordering up a new set of wheels soon .
We've had some luck with grinding out the cracks and welding them shut. Die grinder to get the holes back round. We've also welded on a reinforcment ring around the entire center hole and redrilled through the original holes and through the ring.
My guess is the blower might be the issue....
Regards, Kirk
Do you use a good torque wrench when you tighten them? Improper torque can let the lug nut act like a wedge when you spin the wheels. Can you see them on the inside also?