The hole on the Continental 4000s tyre indicates the wear and tear of the tyre. When the hole disappears, the tyre needs to be replaced. Picture 1
Canyon consistently strives to ensure the quality and accuracy of the information contained in this Technical Support Center. Any repairs or adjustments which you carry out on your bike are entirely at your own risk. If you are in any doubt about what to do, you should send your bike to Canyon or take it to another qualified repair specialist. Canyon gives no guarantee or accepts no liability for the any of the information contained in this Technical Support Center.