It's actually better to ride slightly to the left of center (between the center and left tire track). Some cars, will try to squeeze themselves between you and

It's actually better to ride slightly to the left of center (between the center and left tire track). Some cars, will try to squeeze themselves between you and oncoming traffic when you ride in the right tire track. Riding further to the left will make it clear to those behind you that they must change lanes to pass you.