Metal is a medium that changes its properties when heated. This can lead to deformation as well as changes in the toughness, hardness and elasticity. Normally, these properties are significantly changed during welding.
This is the reason why the SIDEFLEX system is based on a technical solution that involves clamping to the rim where no welding is required. The properties guaranteed by the manufacturer of the rim are thus not changed.
Another advantage is the fact that the system can be quickly dismantled, because for various reasons a tyre change is possible despite the sidewall protection system.