My little guy is 5 and is just about ready for the training wheels to come off - not quite - but soon....the boy down the street is 7 and he just had his training wheels come off a few weeks ago....I used to run behind our son with his bike but he got to be really, really fast so we just went and purchased our own mommy/daddy bike and now we ride together :-) I think 2 is really too soon for a 2 wheeler. He has actually gotten his balance really well from his scooter that we got...he can now go like the wind while pumping with his foot on the ground behind him and then lifting it up and balancing it on the scooter with his other and he is making all kinds of turns and tricks while balancing...I think that has helped him big time with understanding balance and will help him when the trainers come off