What Causes Vehicle Pulling to One Side?

[LeTaylor]

Here are the reasons for vehicle pulling to one side: 1. Incorrect wheel alignment. In most cases, this can be resolved by performing a wheel alignment. However, if the problem persists after alignment, it must be caused by other factors. 2. Different tread patterns or uneven tread depth on the left and right tires. It's best to use the same type of tires for the entire vehicle with identical tread depth. Tires exceeding the wear limit must be replaced. 3. Unequal tire pressure on both sides. Different tire pressures will cause tires to become uneven in size, inevitably leading to pulling when rolling. 4. Uneven spring deformation of front shock absorbers. The condition of shock absorber springs can be judged by pressing or comparing after removal. 5. Failed front shock absorbers. When front shock absorbers fail, the suspension becomes uneven during driving, causing uneven force distribution and resulting in pulling. 6. Excessive wear of vehicle chassis components causing abnormal gaps. Common parts prone to excessive gaps include steering linkage ball joints, control arm bushings, and stabilizer bar bushings. 7. Poor brake return or incomplete separation on one wheel. This is equivalent to applying partial braking on one side continuously, causing the vehicle to pull while driving. 8. Overall frame deformation. Excessive difference in wheelbase between both sides beyond the maximum allowable range.

[LeMarcus]

I've encountered the issue of the car pulling to one side several times. The most common reason is uneven tire pressure—for example, if the left tire has less air, the car will pull to the left; the same goes for the right side. Uneven tire wear is also a frequent problem, especially after long drives when the tread wears down, making the steering unstable. If the suspension system is aging, like loose shock absorbers or ball joints, the car is prone to pulling. Incorrect wheel alignment is another major cause, particularly noticeable when driving on highways—if the tire angles are off, the car will drag to one side. Road conditions can also play a role, such as uneven slopes, but that's temporary. I recommend checking the tire pressure yourself first and using a pump to balance it out. If that doesn't work, get a wheel alignment check at a shop right away—don't delay. Paying attention to tire health regularly can save a lot of trouble.