I don't know if anyone else has had these problems, I can' find much with the search tool but... I've had two wheel offs in the last 18 months on my '99. The first was a couple of weeks after a tire rotation, my right front came off while traveling down I-70 in Kansas City. Then just yesterday I started getting a severe vibration, that reminded me of the first time my wheel came off, sure enough there was one lug nut holding everything on. It was the RF again. After the first time I had all new lugs, and bought one new wheel to replace the one that came off. The wheels are an aftermarket alloy wheel. This time it's been a good six weeks or so since a local company was in there to do some brake work. Has anyone here had similar difficulties? I'm going to go ahead and replace all of the studs (only three didn't get sheared off), and swtich to a regular steel wheel. Should it seem odd that it was the right front again? What about the spacer that is on the right front of these trucks? After the first incident I have been anal retentive about checking the torque on the nuts, but I hadn't checked it since about a week after it was in the shop. If anyone has any advice other than check the nuts once a week, it would be appreciated.