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unusual steer tire wear

I have 106000 miles on my steers. I've developed a 4 inch swath of deep wear ACROSS the drivers side tire the rest of the tire and the passengers side steer have excellent tread depth, any idea what would cause this 4 inch wear area?

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100,000 plus is not bad for steering tires but you need to check for slack in the wheel bearings, worn king pins...when was the last time the steering shocks were replaced and front end alignment... ''italic text''

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If you are running tall 24.5 rubber on the steer I would switch to low pro 24.5s, I had a major increase in my steering tire life by making this switch.


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he is right worn front end parts is all it could be but if you got 100,000 miles out of your steers be happy and buy some more when they jack it up to put them on check for slack there are a lot people that will tell you all sorts of things why steers wear the way they do but i dont think anybody really knows steers do some weird stuff

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I don't agree with the last answer. Some people do guess but I can look at a a tire and tell you exactly what caused the wear in most all cases. Many times it is clear cut and many times you may have a combination of two or more problems. You should get minimum of 120K on steers.

It is harder to know exactly what the problem is without seeing the tires but if you can give me a better description of it I will try to help.

Answer the following.

Was Both steers put on at the same time?

How much tread is on the right now?

How much on the left now?

This 4" strip that is worn, is it cupped or smooth and how far around the tire?

Is the wear on the inside or outside of tire?

Run your palm across each tire and pull it back with slight pressure.

Is the tread smooth going one way and sharp going the other.

To check king pins

Jack the tires off the ground one at a time. Take your fingers and lock them into the first groove of the tire. Shake the top of the tire in and out with everything you've got. Get a rhythmic pattern going. If you feel slack, you either have a loose bearing or a loose king pin.

Most of the time a bearing will be more of a clicking sound, a king pin will be more of a deep clunk. If unsure get someone to watch for you. If the brake chamber moves it is the pin, if it don't it is the bearing.

Hope this helps. Give me some more info if possible.


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I had this same problem. I was told that it was a defect in the tire, the inner bands become seperated. Solution, replace tire.

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David will be eternally grateful.
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