New rotors and pads, strange noise? - Scionlife.com



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Old 01-13-2011, 05:13 AM   #1  
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Default New rotors and pads, strange noise?

Today I installed cross drilled/slotted rotors with centric posi-quiet ceramic brake pads. Now when I am braking from speeds above about 15 mph I get this strange whistling/ticking noise, the closest thing I can relate the noise to is putting a card in a bicycle spoke. Is this due to the drilled/slotted rotors? Or did I do something wrong? Nothing feels strange when I brake, in fact it feels a lot better than stock and stops really well. The noise is pretty faint and can only be heard with the windows down. Thanks in advance.
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Old 01-13-2011, 08:51 AM   #2  
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Originally Posted by xbBrian View Post
Today I installed cross drilled/slotted rotors with centric posi-quiet ceramic brake pads. Now when I am braking from speeds above about 15 mph I get this strange whistling/ticking noise, the closest thing I can relate the noise to is putting a card in a bicycle spoke. Is this due to the drilled/slotted rotors? Or did I do something wrong? Nothing feels strange when I brake, in fact it feels a lot better than stock and stops really well. The noise is pretty faint and can only be heard with the windows down. Thanks in advance.

Yup... I installed some d/s rotors as well, instantly heard the clicking sound. Thought it would go away after they got bedded in or properly adjusted. 5000 miles later, still clicking. If i drive next to a wall, I can hear the sound echo off the wall and back into the cabin... which gets annoying. I just turn up the music and rev the motor high so i dont hear the rotors clicking.
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Old 01-13-2011, 04:51 PM   #3  
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Welcome to slotted rotors. They always maked that sound since you are scraping the pad over an open slot.
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Old 01-17-2011, 05:20 AM   #4  
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I had Powerslot cryo treated rotors on my old bmw and never heard any sort of clicking/ticking....even with the top down/windows open.

What direction are your slots facing?
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Old 01-18-2011, 05:54 AM   #5  
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sounds like they didnt taper thier cuts on the rotors...

mine dont make that noise and they have a slight taper to the walls on the slots.
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Old 01-18-2011, 02:32 PM   #6  
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True the tapered ones are a lot better but even they have some noise, just nothing compared to un-tapered ones. I just turn up the stereo.
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Old 01-18-2011, 03:07 PM   #7  
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Welcome to slotted rotors. They always maked that sound since you are scraping the pad over an open slot.
Ehh I wouldn't say they should do that. I have had multiple cars both low end to higher end cars I have either owned or driven. Both slotted,drilled and never had that issue. Sounds like just low quality rotors IMO.
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Old 01-18-2011, 08:30 PM   #8  
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I've always had some noise with slotted rotors and I've done them on my last 5 cars. The better quality ones had very little noise, I would have to roll the windows down and drive near a curb to hear it but it was there. I've also done cheaper slotted rotors and the noise was very loud, but you get what you pay for.
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Old 01-19-2011, 05:07 PM   #9  
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The rotors were purchased from r1Concepts.com, They seem to be pretty well made and they use centric premium rotors for their slotted/drilled rotors. Is there anything else that can be causing the noise? Like maybe I put something on wrong or didnt tighten something down enough?
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Old 01-19-2011, 05:17 PM   #10  
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i've had that sound for years on my rotors, with both stock and aftermarket pads..
i like ur description i've been saying it sounds like grading cheese
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braking, car, ice, making, noise, pads, rotor, rotors, scion, scraping, sound, strange, tire, toyota, wierd, xb

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