What are the reasons for a car pulling to one side?

[Emery]

Specific reasons for a car pulling to one side are as follows: 1. Uneven tire pressure on the left and right sides. This is the most common cause of steering pull. Normally, the front and rear tire pressure is around 2.0-2.5. During driving, uneven contact area and force distribution between the left and right tires can lead to inconsistent tire pressure, causing the car to pull towards the side with lower tire pressure. 2. Uneven tread wear on the left and right tires. Differences in steering and road contact can cause uneven tire wear. When one side's tread is excessively worn, its diameter becomes smaller, making the car pull towards that side. 3. Different degrees of metal fatigue in the shock absorber springs. Uneven spring travel on both sides, with one higher and the other lower, results in an unleveled car body, leading to vehicle pull.