What is the danger of damaging the rim ring?

Despite the apparent monolithic nature of the tire rubber, each part of it uses a rubber compound with a different composition and properties. In the area of the rim ring, a rubber is used that is not as elastic as on the tread or sidewall. For a tight fit on the disk, this rubber has greater stiffness, but like everything in the tire, this property has both advantages and disadvantages. When improperly mounted or stored incorrectly, it can be easily damaged, and the tire owner may not even be aware of it, since on a assembled wheel it is not always noticeable.

This is what makes this type of damage insidious. The tire is operated at high internal pressure, and if some elements of the cover rubber are missing, air begins to enter places where it should not. In other words, it enters the very structure, between the layers of textile and steel layers. This air penetration leads to delamination and renders the tire completely unusable.

Such damage can often occur during poor-quality tire mounting. The destruction of the rubber in the area of the rim ring can be a consequence of:
- Insufficient use of mounting paste
- Use of low-quality alternatives to mounting paste
- Excessive force
As well as other violations of assembly rules.

It is important to note that this area is non-repairable.