studs breaking off

[svxAL]

i have 18 inch enkei rsv wheels on my svx with the rings and when I go to take off the wheels i always break studs. iIhave replaced all the studs thinking they were just old and ****ty but then i went to take the wheels off and a few studs broke again i only torqued them to like 80 ftlbs not even and the snapping off when i take them off. Im probly going to sell them this spring if i cant figure out wats going on cause I feel like i cant go out of town cause if i get a flat im f@#$ed so please help or throw out some i deas for me to try this spring!!