Rear outer edge tyre wear

[Animesis]

Got a full new set of tyres and laser alignment about 12,000 miles ago, all are wearing nicely except the rear nearside which I just saw today has worn on the outer edge too the metal within the rubber!
Paid £85 for a 24 hour service new tyre change straight away

But what caused this excessive wear? Previous posts suggest tyre sheer? I may well invest in the Gunson TrakRite if that will sort the problem, but then what do I adjust on the car with it?

[T-Cut]

Originally Posted by Animesis

I may well invest in the Gunson TrakRite if that will sort the problem

It will.

but then what do I adjust on the car with it?

You slacken the trailing arm bush carrier and move it in/out to adjust the rear wheel toe. At a particular sweet spot, the Trakrite will show zero shear when you slowly drive the wheel over the shear plate. When you're happy, tighten the bush carrier bolts. Note that the bolts may be corroded and uncooperative. Maybe best to anitcipate replacing them. These are NLA as MGR spares. but there are equivalents available. There's one or two threads discussing them. A keyword search should find them, but let us know if you have trouble locating the info.

TC

[cb750chris]

Who did your wheel alignment?
I had mine "done" 3 times by a large chain, with a 3 letter name.
Every time the rear nearside wheel would scrub off on the outside edge.
Since then I replaced the front bushes on the trailing arm with polyurethane from a BMW, and had the wheel re-aligned on the Hunter system at tyreshack in Southampton.
since then, the tyre wear has been spot on

I can't say if the chain did not set the alignment correctly, or if it was the front trailing arm bushes that were causing the issue....

However the branch that had a go first time told me the bolts were seized so they could only do the fronts (when I took the car in, I told them I wanted all 4 doing, or none as it was the rear tyre that was wearing strange, not the fronts. So they proceeded to do the fronts only, and left the steering wheel "not straight"), I then undid the (unmarked?) "seized" bolts with a 12 inch breaker bar (so not all that seized, more CBA?). As a result, I now question if they could use their kit, or if they were just rushing the job as it's just an old rover, who cares?

Chris

[COLVERT]

The same sort if wear on the rear nearside tyre of my car turned out to be the tyre itself and not the tracking. The replacement tyre after several years use is wearing as it should.----

[grivas]

Originally Posted by COLVERT

The same sort if wear on the rear nearside tyre of my car turned out to be the tyre itself and not the tracking. The replacement tyre after several years use is wearing as it should.----

How did you find out it was the tire Colvert?

[75driver]

Originally Posted by cb750chris

Who did your wheel alignment?
I had mine "done" 3 times by a large chain, with a 3 letter name.
Every time the rear nearside wheel would scrub off on the outside edge.
Since then I replaced the front bushes on the trailing arm with polyurethane from a BMW, and had the wheel re-aligned on the Hunter system at tyreshack in Southampton.
since then, the tyre wear has been spot on

I can't say if the chain did not set the alignment correctly, or if it was the front trailing arm bushes that were causing the issue....

However the branch that had a go first time told me the bolts were seized so they could only do the fronts (when I took the car in, I told them I wanted all 4 doing, or none as it was the rear tyre that was wearing strange, not the fronts. So they proceeded to do the fronts only, and left the steering wheel "not straight"), I then undid the (unmarked?) "seized" bolts with a 12 inch breaker bar (so not all that seized, more CBA?). As a result, I now question if they could use their kit, or if they were just rushing the job as it's just an old rover, who cares?

Chris

I find that they can be reluctant to do the rear trailing arm bracket bolts, for fear of them shearing.
Last crowd I went to, only had a 12 sided socket, and almost rounded the 1st bolt (after I showed him where to adjust&#128552.
I ended up taking the bolts out myself, replacing with new, and then getting them adjusted elsewhere.


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