How Do I Know If I Need To Replace My Anti-Roll Bar?

How Do I Know If I Need To Replace My Anti-Roll Bar?

Anti-roll bars are fitted to just about any car these days. Most cars have an anti-roll bar on the front as well as the rear of the car. Anti-roll bars stabilize your car when you go through a corner. Whilst it is an important component it’s often tricky to know whether or not you will need to replace it. Luckily there are a couple of checks that can be done to find out if it needs replacing.

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Here’s How An Anti-Roll Bar Works

As its name implies the anti-roll bar reduces the amount a car body rolls when cornering. When you go through a corner a car has the natural tendency to lean to the outside, as its weight is shifted to that side. The component helps to counter this movement and ensure the car’s body rolls less. Anti-roll bars are usually fitted to the front and rear suspension systems.

The anti-roll bar connects one side of a suspension with the other. It is connected to the suspension arms by way of anti-roll bar drop links on each side. That way it can balance the forces put on the suspension system. The amount of weight it can bear will depend on the thickness of the bar that runs between the wheels.


When To Replace The Anti-Roll Bars

Whilst body roll can never be entirely eliminated, the anti-roll bar does play a very important role in the process. If your car’s body rolls too much when going through corners it can become unstable. In extreme cases it can be that your car will be become difficult to handle, and you may lose control. It is therefore vital to ensure that it is in good condition.

If you experience problems with the anti-roll bar it’s normally due to worn bushes on either the bar or the links. The anti-roll bar itself normally doesn’t break and can last a lifetime as it’s simply a metal bar. The bushes, though, are made from plastic or rubber and can wear down or perish over time. Often wear to bushes can be identified by knocking or squeaking noises that occur when driving through corners.

If you are faced with those noises it may be time to get these bushes replaced. Often the bushes cannot be replaced separately from the anti-roll bar or link itself as they are pressed into the actual component. In those cases the whole anti-roll bar or links need replacing.

Of course, if you’re not entirely sure which of the parts need to be replaced it’s advisable to get help from an expert. We here at ClickMechanic have a suspension inspection available for these kind of situations.

Do I Need An Anti-Roll Bar Repair Before An MOT?

Do you have an MOT coming up? It’s especially important to address anti-roll bar issues if you’re taking your car for an MOT. Often MOT testers fail cars on perished bushes or other suspension issues. By getting the problem fixed in advance you reduce the risk of your car failing its MOT, and having to fork out for a re-test.

About Kurt Schleier

Resident classic car enthusiast and blogger at Clickmechanic.

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