Rear tire on passenger side is worn on the outside edge. All tires on my 2006 XK8 convertible look great otherwise.

Since being aligned at dealer & new Pirelli's installed, a garage replaced a wheel bearing that they documented as the rear left. Could that have thrown off my alignment on the other side, or is there likely something else going on?

I'm unsure what to do next? Should I try an alignment or troubleshoot some other things, trying to discover what it might be? I have a copy of the alignment that was done before the wheel bearing repair - if that helps.

Tire pressure was 14 psi below the max (corrected now), but the rear drivers side tire pressure was identical, with no sign of wear.

Below is a picture of the rear passenger side & a picture of the rear drivers side, for comparison. Both front tires are unworn - similar to the condition of the rear drivers side.

Passenger side:


Drivers side:

 

Update:

I keep searching the forum for something similar, but I keep finding where the wear is on the inside of the rear tire, not the outside? For the inside I see where they're being advised to install a thicker shim.

Or maybe when they replaced my rear wheel bearing on the opposite side, they didn't install the initial shim back on? I'm really confused what to do next?

 

Shim adjusts Camber but it's possible you need to adjust Toe.

Changing the wheel bearing requires high torque so they probably had to remove the whole Hub and do it on a bench. There is an eccentric bolt at the bottom of the hub that mounts to the wishbone. This bolt adjusts Toe in/out. It’s possible they did not record the original bolt position and replaced it in a mal-adjusted position. This would affect inner/outer tire wear. Bad Toe does weird things to tires.

You need to get your rear Toe checked with a proper Laser/light set-up.

 

Thank you! I noticed that step when I was thinking about doing the rear wheel bearing repair myself.

I'll proceed with an alignment, to check the toe. I was reluctant to do that next, instead of trying to find out first what might have caused the wear - if the wheel bearing repair on the opposite side couldn't have caused it. Then I kept finding instances in the forum where inner tire wear in the rear was the camber, which couldn't be adjusted, except with shims. I couldn't seem to find any instances where there was wear on the outside edge of a rear tire.

 

I am also getting excessive wear on 2 year old tyres on the out edge on the rear tyres. I wander what would cause this?

 

Toe, got get an alignment.

 

Will do.