only 1 of my 4 tires is worn off on the inside

I had bad inside wear on my 5er tires. Took it to transwest big rig truck shop and they did an axle alignment. This was 4 years ago.
Tires wear perfectly now. Cost me $450. Money well spent.

Big truck suspension/alignment shops can do an alignment. RV dealers are not equipped to do this and usually send them out, then mark up the price. I've had a couple alignments done. Usually in the $150.-200. dollar range.
B.O.

Actually still has a good bend in it, shackles look good leafs look good. I called a place 450 to re-align the axle . The tires are old and will need replacing next year, so i will just drive as is for this summer.

Take a look at the axle from directly in front or behind the RV by 30 feet or so. I bet it sags in the middle like a "U", or it could need an alignment. They bend and go out of alignment quite easily.

RV manufacturers are famous for installing axles that are just *BARELY* adequate for the load and they tend to sag over time.

I would suggest taking it to an axle shop for an alignment check. I take mine in every two years for an alignment check.

mich800 wrote:

myredracer wrote:

83trekker wrote:
Could a loose wheel bearing cause this? Seem a little loose when i was checking it.

Definitely can. Inspect the bearings carefully to make sure they're all okay. Might be wise to replace them all. Use good ones like Timken if you do.

Not sure if I have seen that type of localized wear from a bearing. Typically it has been toe or camber that creates that type of wear. But I suppose the bearing could be so bad it is changing the alignment. I would think a bearing that loose would have destroyed itself by now.

The reason I say that is I've seen it twice so far.

I *think* maybe it's because the tire keeps moving left right as it's spinning down the highways at higher speeds? Maybe also the wheel camber and running at max. sidewall pressure are factors??

well i went out and started to do the bearings on the other side of the 5th wheel, and the the other tire not as bad but yet shows some wear on the inside, bearings all look good. Looks like i have an axle problem after all.

myredracer wrote:

83trekker wrote:
Could a loose wheel bearing cause this? Seem a little loose when i was checking it.

Definitely can. Inspect the bearings carefully to make sure they're all okay. Might be wise to replace them all. Use good ones like Timken if you do.

Not sure if I have seen that type of localized wear from a bearing. Typically it has been toe or camber that creates that type of wear. But I suppose the bearing could be so bad it is changing the alignment. I would think a bearing that loose would have destroyed itself by now.

83trekker wrote:
Could a loose wheel bearing cause this? Seem a little loose when i was checking it.

Definitely can. Inspect the bearings carefully to make sure they're all okay. Might be wise to replace them all. Use good ones like Timken if you do.

When I bought our first TT used (99 Layton) I noticed uneven tire wear on the back two tires. Despite repacking the wheel bearings the problem persisted, so when it was time to get new tires, I repacked the wheel bearings, got the tires installed, and then made an appointment at a frame/alignment shop to have the axels looked at. They adjusted camber and the such and those new tires rode true and wore even until I sold it many years later.