Why are my tyres so loud?

off-road tires

Why are my tyres so loud?

Worn car tires have the unpleasant property of producing a lot of noise. While driving, the road noise can often be heard clearly and disturbingly. But with a few tricks it is possible to bring more calm back into the journey. Anyone who reads our guide is better informed about this topic and can avoid loud rolling noises from the tires.

What is the sawtooth?
The sawtooth phenomenon in car tyres means uneven wear. The sawtooth or step-shaped wear pattern is particularly evident on the tires that are connected to the non-driven axle. As a result, smooth running and thus also the noise behavior of the tires deteriorate. As a result, older and worn tires tend to be louder than new tires. If the sawtooth gets worse, even driving behavior can be negatively influenced. This is noticeable, for example, when the steering wheel wobbles. In addition, the car slides more easily when braking.

How does the loud rolling noise come about?
The sawtooth comes about because modern tires are optimized primarily for good driving characteristics in the wet. There are only a few protruding tread blocks in the area of ??the tire shoulders. When driving on the tread blocks, however, this leads to stronger slipping movements: whenever the tread blocks are in contact with the road, they are compressed. When rolling further, however, the blocks are relieved and expanded again. This is conducive to uneven tire wear. In tire development, the reduction of aquaplaning has thus favored the development of louder road noise.

What do the noise classes mean for car tyres?
In order to be able to better assess the rolling noise of the tires as a driver, there is a test for the rolling noise of the tires in which they are then divided into one of three noise classes. This makes it easier for the buyer to identify tires with loud rolling noises.

READ MORE:  How do I recognize worn tyres?

The corresponding information can be found on the EU tire label . If the label shows a black sound wave, the rolling noise of the tires is at least three dB below the legally prescribed noise limit values. The rolling noise of the tires in the test is the lowest in these models.

Two black sound waves indicate that it is a medium-noise tire. The rolling noise of the tires then corresponds exactly to the EU standard limit value.

Three black sound waves indicate relatively loud tire noise. The default values ??are therefore exceeded.

What can I do about noisy tyres?
If the rolling noise of the tires is too loud for personal taste after the test, there are a few measures that can help. The simplest and most effective way is to keep tire wear as low as possible yourself. For example, it makes sense to change the car tires from front to back after a certain mileage. Since the front wheels usually wear out more quickly, compensation can take place as soon as the rear wheels are used and protected there. Such a change could take place approximately every 8,000 km.

If that doesn’t help because the tires are already too worn, the next car repair shop is the way to go . This also applies to tires that are tied to a specific direction of rotation and therefore cannot be changed from front to back. The pure labor costs for fitting new tires in the car workshop are between 15 and 40 euros (as of February 2019). Then there is the cost of the tires themselves. For more details, read here .

READ MORE:  Right tyres for your caravan

Tyre noise and air pressure – is there a connection here?
Tire noise and air pressure are often associated with each other. Loud rolling noises from the tires can actually be avoided if you drive with the prescribed air pressure. The tire pressure table shows the pressure that should be used in bar. This effectively counteracts excessive tire wear. It is therefore true that the rolling noise of the tires and their air pressure influence each other.

Share this post

READ MORE:  How do I recognize worn tyres?