The electronic brake check measures the average brake performance of the vehicle across the entire braking test, whereas the Tapley would only record the peak braking performance that was typically seen near the end of the brake cycle.
This was a fundamental flaw with the Tapley meters, as they were easy to fool, for example by double tapping the brake, and generally gave a false sense of braking performance due to their design.

Another major factor that can impact your results is the vehicle’s suspension. Tapley meters will show a high reading if the vehicle’s suspension is worn, regardless of the vehicles actual brake performance, as the “dipping” of the suspension at the end of the test will increase the “peak” stopping force the Tapley measures. This will result in artificially high readings.

As an electronic brake tester is able to measure the forces applied across the entire test – not just one part of it – it is able to provide a more realistic result.

To achieve a higher brake efficiency percentage reading, try the following:

• You will need to brake harder than what you would with a tapley meter, but do not cause the vehicle to skid.
• When applying the foot brake apply firmly like a controlled  emergency stop, without skiding.
• Ensure you are testing on a level, firm surface, and dry where possible. If you are testing on a wet surface, the potential for the vehicle to skid, or trigger TRC / ABS systems is far higher, and subsequent triggering of these systems can negatively impact the final test result.
• Ensure the BrakeCheck does not move around during the test, movement of the unit during the procedure will produce an unsatisfactory reading.

Your brake check will turn itself off after a few minutes of sitting idle, this is an inbuilt power saver mechanism to preserve battery life.

If you notice that your BrakeCheck powers off unexpectedly when tapped against a surface, or during normal handling, please get in touch with us to have your brake check repaired. We are also able to offer replacement batteries for these units.

If the calibration light is flashing red, your BrakeCheck is within 14 days of its calibration expiry. If it is solid red, it is overdue and no longer certified to NZTA standards for WOF testing. You must book a recalibration immediately

Speed and stopping distance is worked out using the internal accelerometer and gyro meter, and is to be used as a estimate only. These handheld units are not equipped with GPS, and rely solely on accelerometer and gyro meter input to estimate speed and stopping distance. Measuring distance and speed using accelerometer and gyro meter input is known as inertial navigation, and by nature is error prone without extremely high grade equipment.

Vehicles often have a discrepancy in their speedometer, and this, along with other factors, means there are many variables that can affect how the stopping distance and speed are calculated. Therefore, these readings should be used as an estimation only per the manufacturer’s guidelines.