Causes of Uneven Trailer Tire Wear

Updated 05/30/2012 | Published 05/27/2012

Question:

My tire on the trailer I have is waring on the inside of tire. I have a 3000.lbs single axle?

asked by: Frank

Expert Reply:

Do you mean that the inside of the tread (the half closest to the trailer) is wearing unevenly? Or are you speaking of the inside sidewall?

Many things can cause uneven tire wear, including a bent axle, an overloaded trailer and worn or broken suspension components.

A trailer axle should be slightly arched, with the high spot in the center of the trailer and the spindles on either end being slightly lower. When the trailer is loaded the arch will flatten, placing the trailer tire treads in full contact with the road surface. A damaged or overloaded axle may place the inside edge of the tires in greater contact with the road, rather than the whole tread. A worn or damaged suspension component might cause the trailer to track incorrectly, which would also affect the alignment of the wheels and cause uneven wear.

Make sure that your trailer load remains equal or less than the capacity of the lowest rated component. If you have a 3000 lb axle, but your tires are rated at 1200 lbs apiece your trailer capacity will only be 600 lbs less than the axle capacity. Any towing system is only as strong as its weakest component.

Closely examine your axle and suspension components, and be aware of the load you are placing on your trailer to ensure it is not being overloaded. Once any broken, bent or worn components are repaired or replaced and the trailer capacity and the weight of the load is known and not exceeded, you should have no more problems with uneven tire wear. You will also want to ensure that your that your tires are kept inflated to the maximum pressure listed on the tire sidewall.

expert reply by: Mike L