Ok, I am going to try and explain what I was trying to say. Bare with me.

I know how countersteering (push steering) and centrifugal forces from the wheels work.

What I was trying to say is that bikes need that lean in order to stay on the road. No where did I say that you, the rider, were actually leaning or coming off the seat to one side or the other. Again, the bike needs to lean, not the person.

Centrifical forces in the turn push the bike away from the apex of the turn. Without that lean bikes would always be completely upright, which isn't possible. The centrifical forces would push you away from the turn, with nothing to counteract these centrifical forces (like the lean) then the bike would go opposite the turn and you would fall off.

There are exceptions where leaning isn't necessary but to out corner a car like we are talking about there is no way the bike can stay upright.

As far as body roll, I stick by the fact that bikes can experience "body roll" which is as I said a term describing weight transfer. In a car the body actually rolls, which is where the term comes from, but body roll just describes what is happening which is weight transfer. This is why I said a bike has "body roll", because it is describing weight transfer which a bike has just as much as a car has. Centrifical forces don't stop because you are on a motorcycle. This is where the leaning comes in, essentially counteracting the weight transfer to the outside of the turn.

Hopefully this clears up what I was trying to say.

To RMZ290: I think that it is just as hard and takes just as much experience to push the limits of a car OR a bike, its just much safer to accidentally go over the limits in a car.