How do the bikes differ? I know they look totally different... aero bars on the tri bike... looks like smaller wheels too but what else?
why would someone choose a tri bike over a road bike? and why wouldn't they just ride one all the time?
AND why do they use wheel covers on time trial stages but not in group rides? is it that the weight in a time trail doesn't overcome the benifit of the aero benifit but when in a group with less drag it doesn't make as much sense?
i hope that made sense