Sidewall damage may look similar, but its significance can vary greatly. That is why it is important to understand when a small deformation is simply a design feature and when it indicates a dangerous internal issue.
What may be normal
Some radial tyres may have a slight indentation in the sidewall. This does not always indicate damage and can sometimes be related to the tyre’s construction.
What is dangerous
If there is an outward bulge or bubble on the sidewall, it is a serious warning sign. This usually indicates internal damage and an increased risk of tyre failure.
Why it happens
Sidewall damage often occurs after impacts with potholes, curbs, or other obstacles. Such impacts can damage the tyre’s internal structure, even if the damage is not immediately obvious.
What to do if you notice a bulge
You should not continue driving on a damaged tyre. The safest action is to stop using it immediately and replace the tyre.
How to check sidewalls regularly
- inspect tyres after driving on poor road surfaces
- check for cuts, cracks, or bubbles
- monitor whether the tyre is losing pressure
- consult a service centre if in doubt