Key takeaways
- Wheel balancing corrects uneven weight distribution in a wheel and tyre, stopping vibration.
- Wheel alignment adjusts the angles of the wheels so they point correctly, stopping pulling and edge wear.
- Balancing is done whenever a tyre is fitted; alignment is checked after kerb or pothole knocks or when wear looks uneven.
- They solve different problems, so one is not a substitute for the other, sometimes you need both.
Wheel alignment and wheel balancing are often confused because both involve the wheels and both affect how the car drives. But they are completely different jobs that fix different problems. Getting the right one matters, because paying for an alignment will not cure a vibration, and a balance will not stop your car pulling to one side. Here is the difference, in plain terms.
What is the difference between wheel alignment and balancing?
Wheel balancing corrects uneven weight around a wheel-and-tyre assembly so it spins smoothly without vibration. Wheel alignment adjusts the angles at which the wheels sit relative to the road and each other, so the car tracks straight and the tyres wear evenly. In short, balancing is about weight and vibration; alignment is about angles and direction.
Because they tackle different faults, they are not interchangeable. A car can be perfectly balanced yet badly aligned, or vice versa. Knowing the symptoms of each helps you ask for the right work and avoid paying for the wrong fix.
What does wheel balancing do?
Wheel balancing makes sure the weight of the tyre and wheel is spread evenly around the axle, so the assembly spins without wobbling. Tiny weights are clipped or stuck to the rim to offset heavy spots. Without balancing, those heavy spots cause a vibration that gets worse with speed and wears tyres and suspension parts.
Balancing is done every time a new tyre is fitted, and may be needed again if a wheel weight falls off or a tyre wears unevenly. The tell-tale sign is a vibration through the steering wheel, seat or floor at certain speeds, often around motorway pace. For the full list of symptoms, see signs your wheels need balancing.
What does wheel alignment do?
Wheel alignment sets the angles of your wheels, mainly toe, camber and caster, back to the manufacturer's specification, so the wheels point true. Correct alignment means the car drives straight, the steering self-centres, and the tyres roll cleanly instead of scrubbing sideways and wearing one edge away.
Alignment is knocked out by hitting kerbs and potholes, by worn suspension parts, or simply over time. The classic signs are the car pulling to one side, a steering wheel that sits off-centre when you are going straight, and uneven wear across a tyre's width. Alignment is a separate job from balancing and is usually done on a dedicated alignment rig.
Alignment vs balancing: a side-by-side
The quickest way to tell them apart is by the symptom. Vibration points to balancing; pulling and uneven edge wear point to alignment. This table sums it up.
| Wheel balancing | Wheel alignment | |
|---|---|---|
| Fixes | Uneven weight in the wheel/tyre | Incorrect wheel angles |
| Main symptom | Vibration at speed | Pulling to one side; off-centre steering |
| Tyre wear | Patchy or cupped wear | One edge worn faster than the other |
| When it is done | Every new tyre fitting | After kerb/pothole knocks or uneven wear |
| How | Small weights added to the rim | Suspension/steering angles adjusted |
Do you need both?
Sometimes, yes. A heavy pothole or kerb strike can both knock the alignment out and damage a wheel enough to upset its balance, so you may need both jobs after one bad impact. As a rule, balancing happens automatically with any new tyre, while alignment is checked when symptoms appear or after a knock.
Getting it sorted
If your problem is a vibration, mobile wheel balancing fixes it at your kerb: we bring the balancer in the van and rebalance the wheels beside your car, anywhere in London and the surrounding counties, at any hour. Balancing is also included whenever we fit new tyres. We do not do wheel alignment or tracking, because it needs a fixed rig, so if your car is pulling or wearing one edge we will tell you straight and point you to a garage rather than sell you the wrong job. Not sure which you have? Our guide to unbalanced wheel symptoms helps you rule things in or out.
Frequently asked questions
No. Balancing corrects uneven weight in the wheel and tyre to stop vibration. Alignment adjusts the angles of the wheels so the car tracks straight and tyres wear evenly. They fix different faults, so one is not a substitute for the other.
Yes. Balancing is a standard part of fitting a new tyre, because a fresh tyre and wheel will have heavy spots that need offsetting with small weights. Alignment, however, is a separate job and is not automatically done when tyres are fitted.
Match the symptom. A vibration through the steering wheel or seat at speed points to balancing. The car pulling to one side, an off-centre steering wheel, or one tyre edge worn faster than the other points to alignment. You can need both at once.
Yes. A hard pothole or kerb strike can bend or damage a wheel enough to upset its balance and also push the suspension angles out of alignment. After a heavy impact it is worth having both the balance and the alignment checked.
No. An alignment adjusts the wheel angles and does not touch the balance, and balancing adds weights to the rim and does not change the angles. If you have both a vibration and a pull, ask for both jobs by name.
Balancing can be done at your location, as it only needs a wheel-balancing machine. Precise alignment needs a fixed alignment rig, so it is a garage job, and we do not offer it. We will tell you honestly which you need rather than charge for the wrong fix.