Thread: Rear tyre worn to belt on inside?

The rear alignment is not adjustable. The rear wheels should basically be parallel to each other and vertical from level (perpendicular to horizontal).

Severe uneven tyre wear would probably be due to either something bent in the rear, or a front tyre that was wearing badly and was then rotated to the rear. Once a tyre starts wearing unevenly it will keep wearing that way.

If the tyre has never been off the back, it has to be either a bent axle housing or a loose wheel bearing (or very unlikely bent or loose stub axle). If it got that way on the front (much more common) there are more possibilities - last time it happened to me it was worn swivels.

There is no adjustment in the rear, and worn bushes etc would be expected to wear both rear tyres.

Of course another very unlikely possibility is a faulty tyre.

John

Also possible once on the front and rotated, but before roatation it had devolped a wear pattern that would continue on the rear
cheers
blaze

Thanks for the replies guys. He has never rotated his tyres so the feeling is he may have knocked his diff housing at some point which has bent something. Anyway, getting it checked out soon so will report back.

Thanks again, Mick

MickG

Get him to run a tape measure down each side of the vehicle to check the wheel base on each side. I have had a D1 with a 25mm variation in wheel base left to right, caused by innacurate chassis jigging during manufacture.

I have then had to space the trailing arm on one side to give it some semblance of alignability.

JC

if hes NEVER rotated his tyres before AND hed bent his diff housing Id have thought both wheels would have shown similar wear (as in worn on the inside edge)

Id be leaning towards one of the trailing arms sitting on a worn bush thats letting the side thats most worn on the inside trail a few extra mm.

Originally Posted by Blknight.aus

if hes NEVER rotated his tyres before AND hed bent his diff housing Id have thought both wheels would have shown similar wear (as in worn on the inside edge)

Id be leaning towards one of the trailing arms sitting on a worn bush thats letting the side thats most worn on the inside trail a few extra mm.

I'd have thought that would just make it to crab a bit, but as the wheels remain parallel they would still not give any scrubbing or abnormal wear. On the other hand, a bend, loose bearings etc that allows one wheel to lean in at the top would put all the wear on the inside, and in addition it would be scrubbing a bit.

John

if it was a severe case of axle misalignment Id agree. But if his tyres have never been rotated then the extra mm's are enough to do it and not generally have a really noticable effect on the ride of the vehicle.

Thats not to say that the idea of a bearing gone, bent housing stub axles or even a dished down rim arent to be excluded but since its an easy visual insepction and measurement that can elimintate a lot of other things (twisted chassis, suspesnion geometry) I'd start there....

To throw more chaos to the relm...

If the front axle is out it can cause the problem to appear on rear axke as well....