Vs thread (brakes)
- Thread starter Ryno666
- Start date
Ryno666
Member
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- Mazda2
DRILLED VS SLOTTED ROTORS
For many years, most racing rotors were drilled. There were two reasons-the holes gave the "fireband" boundary layer of gasses and particulate matter someplace to go and the edges of the holes gave the pad a better "bite."
Unfortunately, the drilled holes also reduced the thermal capacity of the discs and served as very effective "stress raisers," significantly decreasing disc life. Improvements in friction materials have pretty much made the drilled rotor a thing of the past in racing. Most racing rotors currently feature a series of tangential slots or channels that serve the same purpose without the attendant disadvantages.
Source-stoptech superstreet online article 130
For many years, most racing rotors were drilled. There were two reasons-the holes gave the "fireband" boundary layer of gasses and particulate matter someplace to go and the edges of the holes gave the pad a better "bite."
Unfortunately, the drilled holes also reduced the thermal capacity of the discs and served as very effective "stress raisers," significantly decreasing disc life. Improvements in friction materials have pretty much made the drilled rotor a thing of the past in racing. Most racing rotors currently feature a series of tangential slots or channels that serve the same purpose without the attendant disadvantages.
Source-stoptech superstreet online article 130
Last edited:
Racebrewer
Member
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- Mazda, Mazda 2 Touring MT
Somebody should tell Porsche........<LOL>
I have no idea what is actually better (probably little real world difference) but Porsche still drills their rotors. Looks?
John
I have no idea what is actually better (probably little real world difference) but Porsche still drills their rotors. Looks?
John
