Bicycles are surprisingly stable as long as they are able to maintain some momentum.
minutephysics had a great video about this too:
How Do Bikes Stay Up?: https://www.youtube.com/watch?v=oZAc5t2lkvo
minutephysics had a great video about this too:
How Do Bikes Stay Up?: https://www.youtube.com/watch?v=oZAc5t2lkvo
I think that this is the current status, knowing that the bike does not fall by the simultaneous combination of several factors. When analyzing the problem mathematically, it can be found that there are additional stability factors that do not even have direct physical meaning.