Excessive wear on rear tires on 1997 Limited-Any ideas?

[4RUNNERTMAN]

Hey all,
I purchased a matching set of Kuhmo tires last winter and have put about 9k miles on them, (tires are rated at 50,000 mile) Really like the ride these tires give, anyway I had the tires rotated and was noticing a slight wobble or vibration in the steering wheel at certain speeds so I looked at the drivers side tire and sure enough one of the weights was missing, probably happened when they rotated them. I had the tire rebalanced and the wobble got better but not completely gone so I am guessing the passenger side tire may need balancing as well. Now when my guy pulled off the tire to balance it he said to me man you have been putting some miles on these, do allot of driving with this vehicle? I told him no and upon further inspection of the front tires which were just rotated from the rear of the vehicle they are really worn on the inside of both tires and about the same extent. So my question is what would cause the rear tires n this 4Runner to wear in that way and by the way the front tires look like new, hardly any wear at all. I do not do any hauling, nor do I pull trailers and the like so not sure where to start. Any help would be greatly appreciated, thanks!

 

[Acidmeld]

Probably have worn out shocks.

 

[purevenom1]

I would like to know exactly the cause also. I asked the question in the 2nd Gen on my 94 and got that I needed to have an alignment done again. Just havent gotten the chance to do it yet. It is only on one side that mine is doing it.

 

[manhunter]

I would second the suggestion of checking the shocks, ....., are they the original OEM ones? However, normally shock wear would be across the tread and not just on one side or the other, and not sure about the alignment deal on the rear, I think that involves aligning the rear with the front and you don't have a toe and camber issue that would cause that kind of wear on the rear tires. I am sure there are some experts on here that can pinpoint your issue better.

 

[KB084RUNNER]

I have had that on other 4wd SUV's and now get a 4 wheel alignment with all new tires. Plus I rotate every 5000 with oil changes and my tires seem to wear evenly. I have almost 40k on my factory tires and they are worn evenly.

 

[fourwd1]

You might want to have the rear suspension checked and aligned if necessary.