What is the primary physical limit that determines a vehicle’s braking ability?

Question

DentroTest · Accepted Answer

The true physical limit of braking is not the power of the braking system itself, but the tires' ability to maintain adhesion (grip) on the road surface. Physically, the brake system stops the wheel from turning, but it is the friction of the tire against the ground that stops the vehicle's movement. If the braking force exceeds the available grip, the wheels lock up (or ABS engages), and the vehicle slides without stopping effectively. Although speed and the number of passengers (mass) affect the stopping distance and kinetic energy, the maximum 'ceiling' of force that can be applied before losing control is dictated by the tire.

What is the primary physical limit that determines a vehicle’s braking ability?

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