FWIW, I've never told anyone that the impact uns we used were "calibrated" for 85ft-lbs. of torque. The procedure we adopted involved using a "torque stick" to run lugs down and then checked them with a torque wrench. All of our guys knew how to use the tool. Really, that's not neither here nor there.

I agree tire shops that don't know how to properly torque lugs are really aggravating. It really baffles me how something so easy to do right gets done so wrong all the time.