Lug nut torque

luvglass wrote:
We've been out almost 8 years now, over 60,000 miles towing and 3 sets of tires and the wheels are still turning and I've never checked the torque. Never did either in 60 years of driving a car.
Simply don't understand what the problem is. Why would trailer wheels come loose and not wheels on every other kind of vehicle. Is there something different about RV's?

Sure, its obvious what the difference is.
Trailer wheels work environment vs the car/truck wheels work environment is apples vs oranges.

Trailer wheels are close together towards the center of a heavy vehicle. This requires them to side scrub as the trailer turns in any direction such as going around a corner/etc which adds much more side stress issues to the wheel/bearings/tires/U bolts/etc. This can cause lugs to loosen. Also a the lugs on a trailer wheel carries the load unlike a car or truck that the hub carries the load. Together they can loosen a lug.
Experts and mfg tell us to check the lugs after a couple of hundred miles after new wheels have been installed or a wheel has been removed and put back on.
A truck or car has the wheels at the corners. The front set steers around a corner and the rears simply follow. And yes trucks have wheel issues also from busted centers to split beads to loose lugs but not at the rate a trailer can have.

I have over 800k miles pulling equipment trailers on the road and have seen and had myself numerous loose/lost/broken trailer wheel issues.