Run flat tyres tend to be extremely hard & rigid. With this in mind, whenever you hit unexpected bumps in the road (for example deep pot holes) all the of the force can be felt straight through your wheel, this is due to the run flat tyre having no bounce to it. Sometimes this can cause your alloy wheel to crack. We see this a lot and it is something we can fix. if you would like to know more about this process please see our services page.