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What is Causing Wear on Outer Edge of Passenger Side Tire on Trailer  

Question:

about 3000 miles on a small light weight single axle travel trailer, and the outer edge on passenger side was worn bald while all other edges were fine. Possible causes and remedies?

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Expert Reply:

I first recommend checking to make sure the tire is properly inflated to the maximum psi listed on the tire's sidewall. If the tire is under-inflated, the sides of the tire tread will wear quickly.

If the tire is inflated properly, then it's very possible that there is an issue with the trailer's suspension components or axle/spindle. Since the wear you noticed is only on the outer edge of the tire, this might indicate that the spindle is not parallel to the ground. There could be a suspension issue or load distribution issue that is not allowing the axle to level out properly when the trailer is loaded.

Another possibility for this issue is that the trailer was in an accident at some point or maybe just hit a large curb on the passenger side that caused the spindle to bend slightly downward.

If you cannot find anything noticeably wrong with the axle or suspension, I recommend taking the trailer to a local repair shop to have them inspect the spindle and axle.

expert reply by:
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Chris R

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