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I installed some granatelli slotted/drilled rotors a while back and I notice when I drive close to a wall or road divider I can hear a clicking sound coming from the wheels. Sounds like when you put a card in bike spoke and drive around but a little quieter. It does it on both sides of the car too. Is this normal or did I do something wrong? I installed slotted rotors on my old cobra and it did the same thing but I though it was just the cheap rotors I bought. It is really annoying, thinking of putting the stock rotors back on.
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Black 05 Mustang GT Premium Coupe
5sp Manual / MGW Shifter
Saleen Stage 3 from Brenspeed
Eibach Pro-Kit, Tokico D-Specs
Roush Window Louvers, GT500 Spoiler, Chrome DD Bullitts w/ BFG KDW NT's, Flowmaster AB
Mine do the same thing. When I bought them, I already knew they were going to sound like a poker card in a bicycle spoke from reading these forums. I got them anyway because they look pretty good and were cheap (4 rotors, $300).
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2008 Black GT/CS auto
VMP Tuning 93 oct tune - Steeda CAI - CMCV - UDP's - Strut-tower brace - HD motor mounts - Aluminum D/S - ARH LT headers /w catt'd xpipe - Borla Stingers - Granatelli Dimpled/Slotted rotors - Eibach swaybar kit - Sequential taillights
Just so I know I'm not the only one experiencing this it isn't so bad I guess. It must sound like that for every vehicle driving right next to me though. They probably think my car is messed up or something.
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Black 05 Mustang GT Premium Coupe
5sp Manual / MGW Shifter
Saleen Stage 3 from Brenspeed
Eibach Pro-Kit, Tokico D-Specs
Roush Window Louvers, GT500 Spoiler, Chrome DD Bullitts w/ BFG KDW NT's, Flowmaster AB
There was even a disclaimer on the site I bough them from.
**Slotted and Dimpled rotors such as these have a distinct noise that's associated with running them. A "Clicking" type sound can be heard while applying the brakes to come to a complete stop. This noise is normal and does not affect the durability or performance of these rotors. The noise is created by the hot gasses that build up in the dimples which are then released as the dimple passes the pad allowing the gas to release into the atmosphere.**
Just so I know I'm not the only one experiencing this it isn't so bad I guess. It must sound like that for every vehicle driving right next to me though. They probably think my car is messed up or something.
I switched out my calipers to the Brembo (GT500 ) and DBA drilled and slotted rotors. I'm not sure if the type of calipers or rotors has anything to do with it. You would think it would do the same. http://mustangforums.com/forum/2005-...yesterday.html
There was even a disclaimer on the site I bough them from.
**Slotted and Dimpled rotors such as these have a distinct noise that's associated with running them. A "Clicking" type sound can be heard while applying the brakes to come to a complete stop. This noise is normal and does not affect the durability or performance of these rotors. The noise is created by the hot gasses that build up in the dimples which are then released as the dimple passes the pad allowing the gas to release into the atmosphere.**
Well mine do it all the time even when not braking. It is a bit louder when applying the brakes though.
Quote:
Originally Posted by americaniron
I switched out my calipers to the Brembo (GT500 ) and DBA drilled and slotted rotors. I'm not sure if the type of calipers or rotors has anything to do with it. You would think it would do the same. http://mustangforums.com/forum/2005-...yesterday.html
It's probably because the slots are so small on your rotors. Mine go all the way to the edge of the rotor.
__________________
Black 05 Mustang GT Premium Coupe
5sp Manual / MGW Shifter
Saleen Stage 3 from Brenspeed
Eibach Pro-Kit, Tokico D-Specs
Roush Window Louvers, GT500 Spoiler, Chrome DD Bullitts w/ BFG KDW NT's, Flowmaster AB
I installed some granatelli slotted/drilled rotors a while back and I notice when I drive close to a wall or road divider I can hear a clicking sound coming from the wheels. Sounds like when you put a card in bike spoke and drive around but a little quieter. It does it on both sides of the car too. Is this normal or did I do something wrong? I installed slotted rotors on my old cobra and it did the same thing but I though it was just the cheap rotors I bought. It is really annoying, thinking of putting the stock rotors back on.
Yes it's normal. The Granatelli rotors are actually EBC GD (Grooved and Dimpled) series rotors. The noise comes from the dimples and is the reason I got rid of mine. I now use EBC USR series rotors and have no noise from my brakes.
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2006 Redfire Mustang Coupe GT - Deluxe. IUP, Shaker 500, Side Air Bags, Spoiler Delete. C&L W/ XCal2 | Brenspeed Tune | MGW Shifter | Steeda Ultralite Springs | Steeda Pro Action | 3.5" Shaftmasters DS | BMR Panhard Bar | Spohn LCAs | Steeda UDPs | Corsa Xtreme AB | Bassani X-Pipe | 1/8 Mile 8.503 @ 84
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Slotted/drilled rotors supposed to be noisy?
