Breaking lug studs indicates that something serious is going on. Are the wheels made for the Chevy 7/16" studs? Do not use 1/2" hole wheels on a vehicle with 7/16" studs. Is someone overtightening the lug nuts ..... OR severely undertightening them? Find the specification for your truck and use that torque. Retorque the lug nuts after a day. Check them periodically to see if they are loosening.

How many times has this happened? Did all of the studs break the same time? If each stud location has broken only once, could someone have overtightened the studs at some time in the truck's life?

Putting larger diameter studs is tough if the wheels are drilled for 7/16" dia studs. Also, there are quite a few stud models....each has a knurl diameter that is pressed into the hub. The diameter of the knurl determines the diameter of the hole....the knurl dia is larger than the hub hole diameter so there is some metal deformation when the stud is pressed in. You have to match the knurl length to the thickness of the hub, etc. I dont think that going to 1/2" studs is the answer...it is a band aid and does not fix the root problem.

mike in tucson