Going back quite a few years now I had almost new 1/2 inch studs in my Mark Williams axles and snapped them on the starting line losing a slick and bending up the 1/4 panel , luckily the 1/4 was repairable. I sent the axles back to Mark Williams and had 5/8 studs installed and they are still in the car today ! I had Weld Draglites at the time as the one that came off was damaged as in oblong ( egg shaped ) stud holes perhaps the wheel was worn all along ? I got different Draglites and drilled the holes for the 5/8 studs and never had the holes wear again . I upgraded to Holeshot wheels a few years ago and when they were built I had them drilled for 5/8 studs . The car is footbraked , in the mid 500 hp range with 60fts high 1.40s -low 1.50s .