Wheel Balancing and Alignment: Do You Need Them?

Balancing and alignment get muddled together, but they are two different jobs fixing two different problems. Balancing is normally included in a fitted quote; alignment is often charged separately. Knowing which is which avoids both overpaying and skipping something that matters.

Balancing: part of fitting, but confirm the quote

Wheel balancing evens out the weight distribution around a wheel. Even a new tyre has tiny heavy spots, and small weights are added to cancel them so the wheel spins without vibration. This is done with every new tyre and is part of standard fitting; it should already be in a fully-fitted price, not an extra. Signs it has been missed show up as a vibration through the wheel at speed.

Alignment: sometimes, and separate

Wheel alignment is a different thing entirely, it sets the angles the wheels point at so the car tracks straight and the tyres wear evenly. It is a separate job with its own cost, and it is not always needed. It is worth doing when:

• The old tyres show uneven wear, heavier on one edge
• The car pulls to one side or the steering sits off-centre
• The car has recently hit a kerb or pothole

Fitting new tyres is the ideal moment to put alignment right, so the fresh rubber does not wear out the same way the old set did.

Telling them apart

The simplest way to hold the difference:

• Balancing stops a vibration, and comes with the tyre
• Alignment stops uneven wear and pulling, and is paid for separately

They are not interchangeable, and one does not fix the other. A car can be perfectly balanced and badly aligned, or the reverse.

What to do

For a normal tyre change, confirm that balancing is included. The judgement call is alignment: if the old tyres wore unevenly or the car pulls, having it checked and corrected with the new tyres is money well spent. If the old tyres wore evenly and the car drives straight, it can usually wait. Asking the fitter what the old tyres showed is the best guide; they have them in their hands.

Ask for measurements before paying for adjustments

An alignment check and an alignment adjustment are different services. A check measures the wheel angles against the vehicle specification; an adjustment corrects angles that can be adjusted. Ask whether the quoted price covers measurement only, front toe adjustment, or a four-wheel service. Request the before-and-after report and an explanation of any readings that remain outside tolerance.

Worn suspension joints, damaged wheels and seized adjusters can prevent a normal adjustment. Correcting the underlying fault may be necessary first. Simply setting toe on a car with worn components will not necessarily stop the tyres wearing unevenly.

What if vibration remains after new tyres?

Tell the fitter when it happens: at a particular speed, under braking, or during acceleration. A balancing issue is one possibility, but a bent wheel, a tyre that is not seated correctly, excessive run-out or a brake or suspension fault can produce similar symptoms. Avoid buying another alignment service solely because balancing has not cured a vibration.

After fitting, check the invoice for the services performed and follow the vehicle's tyre-pressure monitoring reset procedure if needed. A car that suddenly shakes, pulls strongly or feels unstable should be inspected promptly.