Originally Posted by
Rolla
+1. Also another
thing to check is if the wheels are abnormally out of balance. Raise the wheels with whatever works for you, a stand, upside down, hold one end of the bike off the ground, and spin each wheel until it stops. It's not unusual to have the wheel to be slightly unbalanced but if it turns forward and back dramatically before it stops turning you may have some issue with a heavy spot on the tire or tube. At least you can rule out the tires or wheel this way.
Last edited by Crankycrank; 06-08-21 at 07:46 AM.