One of the reasons for noise coming from the pedals when riding can be because of the difference in curvature between the cleat and the soles of your shoes.
LOOK cleats are designed with a curvature of 150°. Excessive or insufficient curvature of the soles can cause the deformation of the cleats. This deformation then causes unwanted motion in the pedal bodies, resulting in noise when you are moving.
Please refer to the KEO SPACER manual and video for more information.
After changing my shoes, I have noticed noise coming from my pedals; what can I do?
