Polished rotors
Polished rotors
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Joined: Sep 2002
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From: Maryland
Geez...not that kind of polished. I mean buffed, not chromed but polished on a buffing wheel or whatever they use these days.
The current rotors could do with a face lift. Many Porsches and other sports cars have polished, cross-drilled rotors. I've attached a .jpg file from the Porsche web site. This picture is from the Porsche 911 turbo. Also, the following quote from the Porsche web site regarding the 911 Carrera 4S wheels..."The braking system is also derived from the 911 Turbo, and features internally vented and cross-drilled discs front and rear."
Tom
The current rotors could do with a face lift. Many Porsches and other sports cars have polished, cross-drilled rotors. I've attached a .jpg file from the Porsche web site. This picture is from the Porsche 911 turbo. Also, the following quote from the Porsche web site regarding the 911 Carrera 4S wheels..."The braking system is also derived from the 911 Turbo, and features internally vented and cross-drilled discs front and rear."
Tom
There is nothing "polished" about the 911 rotors (or any rotors for that matter). Nor are they "buffed".
All brake rotors (except for the PCCB system on the Porsche GT2) are made of cast iron. Cast iron is cheap and it dissipates heat efficiently. They all look pretty much the same when they are brand new (that "polished" look you are admiring in the picture)... but that changes quickly as you begin using the brakes.
The Porsche rotors are cast with the holes already in them by a company called Zimmermann (and probably a few other sources as well). Notice the blurb you quote says nothing about "polished" brakes... only vented and cross-drilled. I can assure you, as soon as a Porsche owner washes his car, the rotors will get rusty.
Every time you press the brake pedal, you are in effect "polishing" the rotor. The brakes pads are abrasive enough to cause friction between the pad surface and the rotor surface.
When you see pictures of cars that have nice shiny rotors, it may be that they have replaced the used rotors with a brand new set.
You can buy cross drilled, slotted or cross-drilled and slotted rotors just about anywhere.
Also, you can take a drill or Dremel tool with a polishing wheel and clean off the surface impurites of your own rotor. It will look nice and shiny until you get them wet or apply the brakes the first time.
PeteH
All brake rotors (except for the PCCB system on the Porsche GT2) are made of cast iron. Cast iron is cheap and it dissipates heat efficiently. They all look pretty much the same when they are brand new (that "polished" look you are admiring in the picture)... but that changes quickly as you begin using the brakes.
The Porsche rotors are cast with the holes already in them by a company called Zimmermann (and probably a few other sources as well). Notice the blurb you quote says nothing about "polished" brakes... only vented and cross-drilled. I can assure you, as soon as a Porsche owner washes his car, the rotors will get rusty.
Every time you press the brake pedal, you are in effect "polishing" the rotor. The brakes pads are abrasive enough to cause friction between the pad surface and the rotor surface.
When you see pictures of cars that have nice shiny rotors, it may be that they have replaced the used rotors with a brand new set.
You can buy cross drilled, slotted or cross-drilled and slotted rotors just about anywhere.
Also, you can take a drill or Dremel tool with a polishing wheel and clean off the surface impurites of your own rotor. It will look nice and shiny until you get them wet or apply the brakes the first time.
PeteH
i think its just the type of matereal they make their disks out of or it couls be that you got that from porsches website and we all know that they make the car look much better in there advertisements
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