[slow]

Originally Posted by Number 4

I'm not challenging the need to inspect & pack TT wheel bearings, just wondering why we can go 100,000+ miles in cars/trucks and not worry about those bearings. Are all trailer bearings cheap junk and should be changed out? If bearings have been properly packed with grease then corrosion from sitting idle (compared to cars/trucks used almost daily) shouldn't be an issue. Just wondering.

Car & trucks use newer technology bearings that are self contained, lubricated and not nearly as dependent on reassembly technique (preload) as tapered bearings used on TTs. I am old enough to remember the same issues with tapered bearings once used on cars and trucks when I was teen.