OOPS- That should rear- no the inner wheel doesn't coast. As long as the inner is on the ground the the outer wheel coasts - the inner wheel is tracking the shorter radius, the outer wheel is tracking the larger turning radius. If the inner wheel lifts the outer wheel drives rather than coasts but the inner wheel is still being driven rather than coasting.[
Now we have everyone confused. 😉 I should know better than to post after the end of a 12+ hour workday. 🙁