Originally Posted by
terrymorse
For real?
I'm trying to think of the physics that explains why standing might increase rolling resistance.
Coming up blank.
I think it's because treads are thicker and stiffer than sidewalls. When you're going in a straight line, it's mainly the sidewalls flexing with the tread pressed flat against the road. When you lean, the tread folds, and this takes up more energy.
EDIT: I should have kept reading
Easy way to test this is to run very low pressure on deep carbon wheels. The WHOOSH WHOOSH will intensify when you're throwing the bike around or leaning. That WHOOSH is the sound of rolling resistance.