THE PORTAL HUB - Pinzgauers, Haflingers, Volvo 303s and more!

My buddy was on Hawaii for the week and took a Pinzgauer tour. Since he has been in mine several times and knew more then the average guy about pinzgauers the driver shared a few details of his truck. One was this interesting failure of a 30 year old rim. Anyone else seen something like this before?

Judging by the crack patterns it looks like the lugs were overtightened and split the holes.

I confer with Jim.
However it's a "must do" to check for junk/debris trapped between the drum & wheel.

Also it's important to check the brake drum/shoe adjust aperture plug for "stand proud" as I have come across some that have not allowed the wheel to "seat" correctly leading to distortion.

Levels of cracking like the picture I have only seen recently on big trucks with cone wheel nuts and the defects mentioned.
Dennis

what are the chances the cracks could have been caused by the wrong lug nuts? I know the thread size if common but the tapper on the nuts seating surfaces are different.