Forum Discussion
Chum_lee
Oct 10, 2022Explorer
IMO, bedding new brake pads/rotors is a good practice but usually not necessary provided the technician who replaced the pads/rotors actually drives the vehicle a few hundred feet after servicing it.
For those who do not understand how disc/drum brakes work: In modern days, most brakes are self adjusting, but, do require the first initial few pumps to adjust themselves to their respective mating surfaces by filling the caliper pistons (with brake fluid) to the correct amount. The new wear surfaces are also initially very porous (irregularities) and may have contamination on them from the repair process.
The first driver may not be aware of this and be surprised when the first few pedal pumps go to the floor before they get any braking action. The pedal usually pumps up (the brakes adjust themselves) very quickly.
To get full braking action, it usually requires a few aggressive stops. That's what brake bedding does. Driving moderately will do the same thing after a few miles. IME, it's those who EXPECT new brakes to work perfectly the first time who end up rear ending someone.
Chum lee
For those who do not understand how disc/drum brakes work: In modern days, most brakes are self adjusting, but, do require the first initial few pumps to adjust themselves to their respective mating surfaces by filling the caliper pistons (with brake fluid) to the correct amount. The new wear surfaces are also initially very porous (irregularities) and may have contamination on them from the repair process.
The first driver may not be aware of this and be surprised when the first few pedal pumps go to the floor before they get any braking action. The pedal usually pumps up (the brakes adjust themselves) very quickly.
To get full braking action, it usually requires a few aggressive stops. That's what brake bedding does. Driving moderately will do the same thing after a few miles. IME, it's those who EXPECT new brakes to work perfectly the first time who end up rear ending someone.
Chum lee
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