Lug nut torque

I have to ask, what are you guys drivin'? 450-500 ft. lbs. is bolt snapping range for most of what I work on. I freaked when I first read this thread and I went and looked at the Ford Chassis manual that came with the 1994 33' Holiday Rambler I bought recently. The manual (for Ford Super Duty trucks) gave 140 ft. lbs. which is more in the range I expected.
Steve