Yeah... those stands are pretty extended for lots of heavy working on the truck. Lemme tell you my dads 74 Dodge 3/4 ton truck tipped off of some jackstands one day while we were under it. It tipped my direction of couse.. but I was about 6 from getting a rotor thru my hip when it slammed the ground. 6 may seem like a lot but i was sliding across the driveway as fast as i could as it was falling towards me (not straight down) so it was damn close!! I was shaking for a few min after that...