Does the heat paint return to its original colour?
The thermo graphic heat paint used in DBA Performance 4000 and 5000 series disc rotors has been developed to measure the actual bulk temperature of the disc when operating at the most extreme condition. This peak condition is reached when the vehicle is in full motion with the brakes engaged. To enable an accurate measurement to be recorded, it is essential that the heat monitoring paint makes a permanent change at this critical point in braking.
If the paint were to return to its original colour as it cooled you would not achieve a true indication of the peak temperature as the disc can reduce in temperature by more than one hundred degrees Celsius before you have time to stop and check the reading.
The three paint stripes on these DBA performance rotors are;
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