W210 rear tire wear

[Stihlindixie]

I noticed bad tire wear on the inside of the rear tire. Look like cupping so I assume I have a suspension problem. I jack the back of the car up and noticed a lot of upward motion play in the wheel. Didn't take any effort to move the tire up just a bit. Any ideas? Thanks

[sixto]

I'd start with the bushing between the LCA and hub carrier (item 20) -



I assume you don't hear the grinding/growling sound of a worn wheel bearing.

Sixto
MB-less

[Stihlindixie]

No haven't heard any grinding. Will look into the bushing.

[Skid Row Joe]

Originally Posted by Stihlindixie

I noticed bad tire wear on the inside of the rear tire. Look like cupping so I assume I have a suspension problem. I jack the back of the car up and noticed a lot of upward motion play in the wheel. Didn't take any effort to move the tire up just a bit. Any ideas? Thanks

Suspension/alignment/tire balance/wheel bearing/bent spindle?

Check those things out.......

[nelbur]

I am trying to figure out a similar problem on the same car a year newer. The inside of my drivers side rear tire is wearing, I had it checked over, rotated tires, and aligned, and the wear continued. I have recently checked all the links, sub frame bushings, and lower control arm bushings and see no problems. Of course, I may not know enough to spot the problem.

I have noticed that if I hit a bump or pot hole with the passenger side rear tire the rear end sort of jumps to that side like the wheel briefly steers to the right. I have checked over the toe link but it seems fine. It is my understanding that the only adjustment on the rear suspension is the toe. I have pumped the tires up to 35 psi until I can figure out what is going on. Mine has 237k miles. If you figure out your problem please post your fix, and I will do the same.

[Stihlindixie]

Originally Posted by nelbur

I am trying to figure out a similar problem on the same car a year newer. The inside of my drivers side rear tire is wearing, I had it checked over, rotated tires, and aligned, and the wear continued. I have recently checked all the links, sub frame bushings, and lower control arm bushings and see no problems. Of course, I may not know enough to spot the problem.

I have noticed that if I hit a bump or pot hole with the passenger side rear tire the rear end sort of jumps to that side like the wheel briefly steers to the right. I have checked over the toe link but it seems fine. It is my understanding that the only adjustment on the rear suspension is the toe. I have pumped the tires up to 35 psi until I can figure out what is going on. Mine has 237k miles. If you figure out your problem please post your fix, and I will do the same.

Will do. I know it has the original shocks so maybe that has something to do with it. But will have it checked soon.

[t walgamuth]

if your shocks are shot hitting bumps will upset the car. Shocks are very important to safe handling.

[Skid Row Joe]

Originally Posted by t walgamuth

if your shocks are shot hitting bumps will upset the car. Shocks are very important to safe handling.

[suspension]...

[Zulfiqar]

The inner wear is caused by a worn out camber link in the rear. The camber link is the top most arm holding the spindle, if you can lever the arm with a crowbar or something similar and the bushing is torn or sloppy the wheel will sit inwards and wear out the inner edge of the tire really quick.

[EdzBenz]

I was experiencing inner tire wear as well. Camber arms were shot. I bought the adjustable camber kit so rear tires were back in alignment. And, the camber can be fully adjusted moving forward which is a huge plus.

[Stihlindixie]

Originally Posted by EdzBenz

I was experiencing inner tire wear as well. Camber arms were shot. I bought the adjustable camber kit so rear tires were back in alignment. And, the camber can be fully adjusted moving forward which is a huge plus.

Are you referring to the camber struts? Or that what Pelican Parts calls it.

[Stihlindixie]

Originally Posted by EdzBenz

I was experiencing inner tire wear as well. Camber arms were shot. I bought the adjustable camber kit so rear tires were back in alignment. And, the camber can be fully adjusted moving forward which is a huge plus.

I look at it tonight but will have to jack the car up a bit. I think I found the struts. If what I was looking at is it then there was some play in it. I stuck a rod between it and shock and it wiggled around extremely easy.

How hard are these to replace?

[nelbur]

Originally Posted by EdzBenz

I was experiencing inner tire wear as well. Camber arms were shot. I bought the adjustable camber kit so rear tires were back in alignment. And, the camber can be fully adjusted moving forward which is a huge plus.

There are two links near the top of the tire. Did the adjustable link replace one of them or are both links involved?

[Stihlindixie]

I checked everything today with the tire off. Everything seemed tight and no play except for the shock. So I will start with that.

[Zulfiqar]

the camber link is the upper most link going to the subframe from the wheel, the front lower one mounted to the underside of the subframe is the pushing link and the one above it is the puller link.

The camber link is the one which causes the inner tire wear, the other factor that can severely throw off the alignment is the toe link at the rear, its the link with the small ball joint in it.