powdrhound

I don't have the pictures and he did not take any unfortunately before throwing away the studs. He told me they were sheared right at the hub. It was the left rear wheel on a clockwise track, so yes, the left rear is the most heavily loaded wheel. Most if not all of his track time has been on this track.

Burger

This was running 94ft lbs. Left rear.

911mhawk

Bought a set of these ^ to go with some fresh studs.
In case anyone's wondering what they look like from this eBay seller:

Rob S

Classic fatigue failure: initiation around 10:00 at a thread root near the hub surface. Final fracture around 4:00. Flat fracture surface. No obvious defects. Higher magnification examination would almost certainly show telltale marks (called striations) throughout the fracture surface that confirm cyclic growth of the crack.

Gotta stop that bending. Sufficient torque is the answer!