Care to show that reaction in a balanced equation? The force of resistance between tire and road is called Friction, its a physical property not a chemical one. F = ma. 4 years of uni science degree at work here, my $40K was not wasted LMAO.

And friction can be changed by flex, in both positive and negative manner. Think of it this way, a steel ball and a rubber ball, one is going to have much more rolling resistance (friction) than the other because of material flex, the same goes with chassis, if a chassis flexes under certain conditions it can generate more friction in one part of the car and less in another.