I change my wheels and tires on my quads probably more then anyone and I have never had a problem. What torque setting are you using on your torque wrench?I think it is due to the constant changing of tires and wheels, even though i kept them clean and always sprayed lugs with PB blaster.
Honda calls out 47 ft lbs, I have always used that torque on all my quads. Can't imagine that 8 extra ft lbs would be enough to snap the stud, but I guess it is possible.i think i have been using 55 ft lbs.... is that right?