What does swaying from side to side at the back of a motorcycle indicate?

Swaying from side to side at the back of a motorcycle is typically indicative of a flat rear tire. When the rear tire loses air pressure, it can create instability, making the motorcycle feel unsteady and lead to side-to-side movements. This instability can result in a loss of control, which is critical for the safety and handling of the bike.

In contrast, while excessive speed can lead to handling issues, the specific swaying motion is more directly linked to tire problems. Issues with the brakes or the front tire may cause different symptoms, such as pulling to one side or difficulty stopping, but they do not typically manifest as a swaying motion exclusive to the rear of the motorcycle. Therefore, recognizing this swaying as a sign of a flat rear tire is essential for any motorcycle rider to ensure safe operation and maintenance of the motorcycle.