Bremsbalance

Bremsbalance is the distribution of braking force between the front and rear axles of a vehicle during deceleration. It is a key aspect of vehicle dynamics and is often referred to as brake bias. In most road cars, the front axle receives a larger share of braking force because weight shifts forward under braking and the front tires typically have higher grip.

The balance is achieved through a combination of passive and active systems. Passive components include proportioning valves and mechanical links that reduce rear brake pressure relative to the front. Active systems use electronic control, such as electronic brake-force distribution (EBD), which adjusts braking force to each wheel based on factors like speed, steering inputs, yaw, and wheel slip. Antilock braking systems (ABS) and stability control systems also interact with brake balance to maintain directional control during deceleration.

Several factors influence bremsbalance, including vehicle weight and its distribution, the center of gravity height, suspension setup, tire grip, road surface, and speed. Brake fade, worn components, or changes in tire grip can alter the effective balance. Proper balance improves stopping distance and steering stability, while too much front bias can reduce steering feel and cause front-wheel instability; too little bias can cause rear-wheel lockup or instability.

Measurement and adjustment are common in both everyday and performance contexts. Modern vehicles often monitor wheel forces and adjust via EBD, while higher-performance or race cars may allow manual adjustment of brake bias to suit track conditions.