I did not put this in general thread section on purpose, but forum referees can move it if they so desire. I won't know for sure until tomorrow morning, but I believe I strained my lower back. One front tire on the '96 Dakota had 10 pounds less air than the others so I pulled it off at home. Instead of using the wimpy factory lug wrench, I brought out my extra large star wrench. I could just barely remove the theft-proof nut with the special key. Then I struggled like hell to break loose the first regular lug nut. The second regular lug nut would not budge, but my back was about to snap in half. Forget this, I brought out my Craftsman 1/2" breaker bar and six-sided 3/4" socket. Not much better, I could feel my back straining as I successfully removed the remainder of the lug nuts. No way an average female could have changed this tire. And with the provided factory lug wrench, I may have failed as well. My owner's manual specifies tire lug torque specs at 85-115 ft. lbs. That seems like an extreme range for such a critical item. Anyhow, I recently purchased a four-tire set of new Michelin tires at a local chain tire store. Don't remember if the tires have been rotated on their premises for the first time or if the tires still remain as initially installed. Regardless, I hate to see tire "tech's" using the same impact wrench to remove/install tires on all customer vehicles. Ought to be a law (there are laws about tire pressures). My poor aching back.