If you are experiencing abnormal noise coming from the front wheel of your N70, there are a few things you can do to diagnose and fix the issue.

Firstly, it is important to judge whether the abnormal noise is caused by tire noise, insufficient tire pressure, or quality problems. Check the tire pressure and ensure that it is at the recommended level. If the tire pressure is fine, inspect the tire for any signs of wear or damage. If the tire appears to be in good condition, it is possible that the noise is caused by a quality issue with the tire. In this case, it may be necessary to replace the tire.

If the tire is not the issue, the next step is to check whether the front wheel is interfering with the fender. If this is the case, adjust the fender to ensure that it is not rubbing against the wheel.

If the noise persists, it is possible that the front fork is deformed. In this case, it is necessary to replace the front fork.

If none of the above steps have resolved the issue, it may be necessary to replace the motor or controller. It is recommended that you contact our customer support team or an authorised service location for further assistance with these steps.

By following these steps, you can identify and fix the issue causing abnormal noise from the front wheel of your N70.