I don't want to buy a torque wrench, as I rarely do garage work on my own (I have skilled friends and a beer budget for this), but I do do the summer-winter-summer tire changeover in spring and fall, on both my car and my wifes'.
What I want to know is how tight should I put the lugs on using body weight as a guide? Can they be TOO tight? I'm 210 lbs and use the OEM tire wrench (12" long). I tend to put about 1/2 my torso weight into it, pushing down, which to me would be approx 80-90 ft-lbs of force. I need to give it a good pull to remove them, so I figure they're at least not too loose.

Anyone have recommendations? Just curious...