Is Wheel Alignment Necessary After Shock Absorber Replacement?

[Kara]

Replacing shock absorbers does not require a wheel alignment. Even though the entire front suspension and hub connections need to be disassembled during shock absorber replacement, the length of the tie rods that affect the front wheel toe-in remains unchanged. After reinstalling the tie rods post-replacement, their relative positions will return to their original state. Wheel alignment primarily adjusts the relative positional relationships between the wheels and the chassis (including wheels, steering knuckles, front axle, etc.). For the front wheels, alignment includes four parameters: caster angle, kingpin inclination, camber angle, and toe-in. For the rear wheels, it includes two parameters: camber angle and toe-in.

[Roman]

If you remove the shock absorbers, I recommend getting a wheel alignment after the job is done. As someone who frequently repairs cars, I've encountered many similar cases. Shock absorbers are the core components of the suspension system, and their removal may cause slight positional changes that affect the wheel camber or toe angles. If not adjusted, this can lead to uneven tire wear, causing the steering wheel to feel off-center or the vehicle to pull to one side. I've handled many cases where owners neglected this, resulting in ruined tires within months and expensive replacements. Additionally, handling performance decreases, making the vehicle prone to losing control during high-speed turns. An alignment isn't expensive, typically costing between 100 to 300 RMB, and can save you significant repair costs later. For safety reasons, always check the alignment parameters after any suspension modifications.

[ODamian]

I've had personal experience changing shock absorbers myself several times. If you don't get an alignment immediately after removal, the car will drive abnormally, such as increased tire noise or deviation in driving trajectory. Once I saved money by skipping it, and within half a year the inner side of the rear tires wore out severely, ultimately requiring a full tire replacement that cost me over a thousand yuan extra. The purpose of alignment is to ensure correct wheel angle alignment and prevent tire waste. My current practice is to either have a friend help check with a wheel alignment gauge after changing shocks or spend a small amount at a professional shop for alignment. This extends the car's lifespan and ensures smooth driving. Remember, minor repairs are easy, but long-term results depend on attention to detail.

[DianaAnn]

Simply put, it's best to get a wheel alignment after replacing shock absorbers. When I first started learning car repairs, I dealt with this—alignment is about adjusting the wheel positions so they run straight without veering. Removing shock absorbers might disturb suspension components, potentially messing up the wheel angles. Without alignment, tires wear out faster, and the car may pull to one side. Most repair shops will recommend it; just a quick machine test. The cost is low and prevents future issues. If you can't get it done immediately, check tire wear yourself. If one side wears faster, there's a problem. Don't hesitate—for safety's sake, get it done when needed.