Torque Bias Ratio (TBR) essentially represents a traction ratio, defining the limit of torque difference allowed between the wheels before the differential "opens" and permits wheel spin. In other words, it represents how much difference is allowed from one side to the other (Reference 1).
Understanding Torque Bias Ratio (TBR)
Think of TBR as the differential's ability to maintain traction. A higher TBR means the differential can handle a greater difference in torque between the wheels before allowing one to spin freely. Conversely, a lower TBR means the differential will "open" and allow wheel spin more easily.
Practical Examples and Insights
- Example: A TBR of 2:1 means the differential can transmit twice as much torque to the wheel with more traction compared to the wheel with less traction before differentiating.
- Insight: TBR is crucial in off-road and performance driving scenarios where maintaining traction is paramount.
- Solution: Choosing the correct TBR for your application is important. Higher TBR for off-roading where wheel lift is common, and potentially a lower TBR for street driving.
