A highside crash occurs when what happens?

A highside crash typically occurs when the rear wheel loses traction while the motorcycle is in a lean or during a turn, which can happen when the front wheel is allowed to regain traction suddenly. This action causes the motorcycle to rotate forward and throw the rider upward and backward, creating the highside effect. The correct understanding of this phenomenon is vital for safe riding practices and managing traction.

In this context, if the wheels are out of alignment, it can lead to uneven handling and increased risk of losing traction in the rear wheel, thereby contributing to a highside crash. However, it is important to note that the term "highside" is directly related to the dynamics of losing traction and regaining it abruptly rather than merely the alignment of the wheels.

The other possible scenarios—having the front wheel lock, or issues with the rear brake—represent different types of crashes or handling issues rather than the specific mechanics of a highside crash, which focuses on the behavior of traction and balance during a lean. Thus, understanding the underlying mechanics of a highside crash is essential for all motorcyclists to avoid this dangerous situation.