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01-06-2008, 10:03 AM
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Hummer Veteran
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Join Date: May 2007
Location: Belle Chasse, LA.
Posts: 46
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Drill & Slotted Brake Rotors
I would like to know the advantage of purchasing a set of drilled/ slotted brake rotors? My understanding is that there is not much performance increase in breaking with OEM size rotors. So what benefit is there to purchasing drilled/slotted rotors besides looks!!!! If anyone has a good explanation, please enlighten me!!!!! 
Last edited by Bykw2 : 01-06-2008 at 10:06 AM.
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01-06-2008, 10:12 AM
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Hummer Expert
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Join Date: Feb 2005
Location: Helsinki, Finland
Posts: 682
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Re: Drill & Slotted Brake Rotors
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Originally Posted by Bykw2
I would like to know the advantage of purchasing a set of drilled/ slotted brake rotors? My understanding is that there is not much performance increase in breaking with OEM size rotors. So what benefit is there to purchasing drilled/slotted rotors besides looks!!!! If anyone has a good explanation, please enlighten me!!!!! |
I have the Brembo Gran Tourismos and I haven't had the OEM's for too long, but I have to say you are probably 100% right. there might be slight increase in breaking power, but other than that it is all looks. They look hot, that's for sure, but I'd really think about it before you go for them...
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Image's nothing-BOOST IS EVERYTHING
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01-06-2008, 10:53 AM
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Hummer Expert
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Join Date: Apr 2004
Location: Grass Lake,Mi
Posts: 583
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Re: Drill & Slotted Brake Rotors
due to the high ceramic content in some pads they create a high presure gas at the surface of the rotor while braking, drilled rotors vent this and improve braking. in some case the gas buildup will prevent good friction transfer and the brake will feel hard on heavy braking but under perform.
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01-06-2008, 06:02 PM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Drill & Slotted Brake Rotors
Drilled rotors dont do squat and are for looks only.
Slotted rotors do aid in removing water and heat from the surface. The purpose of them is so you can use better pads. Due to them causing more heat you want to remove some of their gases/heat with a slotted rotor.
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H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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01-06-2008, 07:26 PM
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Hummer Novice
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Join Date: Nov 2007
Posts: 22
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Re: Drill & Slotted Brake Rotors
It sounds like all the above are good reasons, but if drilled or slotted rotors are so wonderful, why don't you see them more as OEM rotors? How about the claims that it is just marketing or these slots/holes weaken the rotor?
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01-07-2008, 12:21 AM
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Hummer Expert
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Join Date: Dec 2007
Location: Panama City Fl
Posts: 571
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Re: Drill & Slotted Brake Rotors
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Originally Posted by OU812
It sounds like all the above are good reasons, but if drilled or slotted rotors are so wonderful, why don't you see them more as OEM rotors? How about the claims that it is just marketing or these slots/holes weaken the rotor?
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Price, same old stuff on 100,000 other trucks is good enough for me
attitude, demand from customers for them,
I have them on my Firebird all around a with ceramic pads, I have not any trouble with them and in the rain they seem to work very well. I will
be buying some for the H2 soon as the ones I have wear down.
~Richard |
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