MISUSE/THERMAL DAMAGE 1

APPEARANCE

Radial fractures/blue spots corresponding to the venting frames

CAUSE

The blue spots are symptomatic of rising cracks. These are caused by metal-lurgical change in the surface material making it hard and brittle. This is typical of overloading the brakes beyond normal design limits. This could result from intensive or unusual brake use e.g. aggressive driving or excessive payload

EFFECT

Brake fade/reduced brake performance, noise, vibrations

SOLUTION

Replace the discs, avoid abuse of the brake system and make more effcient use of the engine/gears to aid speed reduction

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