So when tightening the screw with 120Nm and then solves the impact wrench, you have no problems. A couple more Nm he will probably also create more. I saw him put on me, because I have to change in the summer frequently between road and sports tires and not always wanted to screw by hand. Such relatively short periods of time (more than 2 months) are not a problem, but he could not solve the wheel bolts after this winter. Ah, but. Two of twenty he did ... If the screws are hanging a bit and then you 140Nm breakaway torque (or something of the order) does, then it does not work with this impact wrench. For the summer / winter change I'd get me something else or continue screws by hand. Mine was the way offentsichtlich already used, since many scratches on the impact housing were. It is as if you had placed him on a stone floor. The screws of carbon brushes were also opened in advance. ;)
