I'm sort of confused on this one as I hear conflicting information on the issue. My Bentley manual says to torque the wheel lugs to a specific torque, specifically 74 ft. lb. +- 7 ft. lb. So, in my quest to dig for a torque wrench in the garage, my brother comes up to me and tells me not to bother, to just torque it as much as you can with your regular 4-way wrench thingie that you can get in any auto store. That's fine and dandy, but I don't possess the strength to even loosen the nuts nevermind torque them properly. Then he suggested the impact gun, which is fine, but only when I'm home. If I plan on attending track events, I definitely won't have access to an impact gun and all I will have is my trusty 4-way wrench and the option of a torque wrench. Now the conflict here is that my Bentley manual tells me overtorquing can cause problems and not just undertorquing. It says it could cause driveability problems like vibrations and whatnot. This is what is making me skeptical on my brother's advice; his advice is pretty much "as tight as you can get it". Also, when I used the impact gun, the torque seemed to be fine as I went for a test drive and found everything to be A-OK, but I don't know if that was because I torque-wrenched it AND afterwards torqued the wheels with the impact gun. What I'm wondering is, if I was to ONLY use the torque-wrench set to the specified torque, would it be just as effective as using the impact gun?