Performance issues

It isn't always easy to get to the bottom of the reasons for different performance issues. Performance issues may be caused by the tyres (type of tyre, incorrect pressure…) and/or a change to the vehicle (accessories, load…). Tyres aren't always the only element to consider.

 

Swaying

Swaying

 

A wave-like movement of varying severity that may occur when riding in a straight line or on a curve and appears at an average speed of around 140 km/h

 

Speed wobble

Speed wobble

 

A brusque sideways movement at the front (front fork moving back and forth), a one-off and very sudden, usually ocurrs during acceleration and is set off by some external impact (a bump, wire).

 

Shimmy

Shimmy

 

 

A sustained sideways wobbling of the front fork at low speeds (<100km/h) during deceleration.

 

Vibrations

Vibrations

 

These occur throughout the whole front fork/wheel at speeds of around 90 to 10 km/h.

 

Tyres are not always the only issue

Weight distribution has a significant impact on whether or not a vehicle will develop a problem. The addition of accessories or modifications (non original top cases, saddlebags, fairings, windscreen, handles, seat, wheels...) may also play a part in performance.