A bulge in a tyre – does it need replacing?
Bulges are irregularities that appear in the structure of tyres as a result of damage to the internal layers. They most commonly occur on the sidewall of the tyre and necessitate the replacement of the tyre in question with a new one. In this article, we take a closer look at bulges: we explain the causes of tyre deformation, when they pose a danger to the driver, and when a bulge means the tyre needs replacing.
Bulges in car tyres – causes
A bulge, or what is commonly known as a ‘bubble’ on a tyre, can occur as a result of various circumstances. Collisions and mechanical damage, during which the tyre comes into contact with
Kerbs and speed bumps, when driven over at excessive speed, can cause the tyre to become deformed. Inflating tyres to too low a pressure also leads to tyre deformation and weakens the tyre’s overall structure. Furthermore, bulges on the sidewall of a tyre can arise as a result of manufacturing defects, as well as from excessive strain on the material.
A bulge in a tyre – is it safe to drive on it?
Even a slight bulge in a tyre can pose a risk to road safety and should therefore be noted by the driver and prompt corrective action. Most often, a bulge indicates damage to the internal carcass, resulting in reduced load-bearing capacity and a decrease in abrasion resistance. In such a case, the best solution would be tyre replacement in Warsaw for a new one.
A bulge in the tyre tread also poses a risk and indicates potentially irreversible damage to the tyre’s inner layers. For these reasons, any irregularities – including even a small bulge on the tyre or its tread – should be treated as grounds for replacement.
A bulge in a tyre – the key signs of deformation
The primary way to diagnose a bulge is to visually inspect the tyre and look for thickened areas in its structure. Most commonly, a bulge appears on the sidewall of the tyre, sometimes on the tread, and less frequently where the tyre meets the rim. As well as visual deformities, it is worth paying attention to vibrations travelling through the steering wheel, which are particularly noticeable at higher speeds.
Furthermore, the driver may experience wheel wobble or unstable vehicle behaviour. Additional noises – such as knocking and rumbling – that occur when driving over uneven surfaces may also indicate tyre bulges. It is also worth noting that bulges are accompanied by a general deterioration in handling, including the car pulling to one side.