Most of the kids on this block are riding two wheelers w/o training wheels by their fourth birthday.
But, they..
#1. Have each other..there are 15 kids all close in age.
#2. Have a street where nobody drives down here unless you live here, and chances are if the kids are outside, all the parents are all home and in the street too, so cars rarely come down here.
#3. They have a lot of outside time, and all the kids play in the street because we don't really have yards.
But, if I lived in an apartment with no easy place to ride, I doubt I'd have a bike for my child either. Especially since even on a short bike ride, kids tend to get tired easily, and you are bent over pushing the bike home after a half block anyway. Then, you have to carry it up three flights of stairs??? I wouldn't do it.
If you do look for a bike. I got a bunch of little plastic trikes from Wal Mart for 19.99 each. My daycare kids ride them in the backyard on the long sidewalk. The pedals are easy to master, even at 18-24 months.
http://www.allaboardtoys.com/fisher-...oduct%20search Like this, only without the Dora. Or this one, but you don't have to put the stickers on it. Ours are all yellow, red and black. They are light enough that they'd be easy to carry up stairs.