What are the reasons for solid rubber tire deviation or uneven wear? How can it be prevented?

In the daily use of industrial vehicles (such as forklifts, electric tractors, forklifts, and port trailers), solid rubber tires are widely used in high-load environments such as mining, warehousing, logistics, and ports due to their puncture resistance, maintenance-free operation, and lack of blowout resistance. However, many users have reported tire deviation, uneven wear, and asymmetrical wear over time, which not only shortens tire life but also affects vehicle safety and operational efficiency.

So, why do solid rubber tires deviate or wear unevenly? What are the underlying causes? And how can they be prevented scientifically? This article will provide you with detailed analysis and propose solutions to help companies extend tire service life and reduce maintenance costs.

I. What is tire deviation and uneven wear?

Before discussing the causes, let's first understand the concept:

Drifting refers to a vehicle that veers to one side while traveling in a straight line, requiring the driver to continuously adjust the direction to maintain straightness.

Uneven wear: refers to abnormal and rapid wear on one side or local area of the tire, which is inconsistent with normal symmetrical wear. It is common on the outer edge, inner edge, one side or one tread of the tire.

Deviation and uneven wear are often interrelated. The former leads to a decrease in directional controllability, while the latter directly affects the service life and safety of the tire.

II. Common Causes of Uneven Wear and Deviation in Solid Rubber Tires

1. Improper Wheel Alignment (Toe/Kingpin Misalignment)

Following the factory, after a collision, or through prolonged wear, the front wheel alignment angles (especially the toe angle) may deviate. This can cause the two tires to no longer roll parallel to each other, generating drag and causing deviation or unilateral tread wear.

Wheel misalignment is a common cause of uneven wear, especially on vehicles like forklifts that frequently turn and carry heavy loads.

2. Uneven Loading or Chronic Overloading

Solid tires have a high load capacity, but if a vehicle is subjected to uneven loading, overloading, or unilateral load, this can cause greater force on one side of the tire, leading to severe deformation. Over time, this can lead to uneven wear.

Some users who fail to balance loads properly during loading or operate on uneven surfaces are more likely to experience this type of wear。

3. Uneven Ground or Long-Term Deflection from the Work Route

If a vehicle frequently operates on slopes or uneven ground, or frequently turns or follows a single route, such as frequently turning left or right on a fixed indoor route, one tire may wear out more quickly.

Similar to "lane memory", running the machine in the same direction for a long time will also cause concentrated stress on certain tire areas.