#John tumbled off a bicycle. OK
John tumbled down a bicycle. NO
John tumbled down from a bicycle. IFFY. Maybe used more for a long tumble.
John tumbled out of a bicycle. NO. "Out of an enclosed space like a car is OK.
John tumbled over a bicycle. OK
Do all of the above sound right and mean about the same? If not, why not? Thanks.
Student or Learner