Originally Posted by spurge4
It could be I suppose. now the million dollar question, how to stop the vibration.
I haven't crawled under to see how the pedal assembly is mounted but if it's metal to metal or plastic housing, that would explain road, engine, frame, and or pedal vibration/resonance transferring to your foot. Maybe a well positioned, vibration foam dampener or silicone/rubber washers so as to not affect safety.
But I didn't suggest that. Just theoretically speaking.