I've got two feed trucks, both F350 duallies with bale beds on them. Last month one of the wheels on the back of one nearly fell off from the lugs loosening, wheel hadn't been off in 5 years. Last night the other truck got a shimmy in it when we took a load of cattle to the market, every lug was about a half turn loose. I put the winter tires on this truck last December and tightened them with a 600lb air gun and a 3/4" breaker bar. Both trucks have been abused this winter in the mud and snow, with a lot of snow packed between the wheels and chattering the tires getting stuck. Anyone from up north that experiences a lot of snow ever had a problem with the lugs coming loose on their trucks? I've owned one of the trucks near 10 years and the other close to 4, never had any problem before. Thanks.