2011 Sti, grinding brakes at 12k miles?
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This is a discussion on 2011 Sti, grinding brakes at 12k miles? within the STi Technical Forum forums, part of the Tech & Modifying & General Repairs category; I just picked up an sti as the title says. There had been a bunch of snow and ice theday ...

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    2011 Sti, grinding brakes at 12k miles?

    I just picked up an sti as the title says. There had been a bunch of snow and ice theday iI got it. So any chance of me hearing any flaws were limited. It is a certified pre owned car so anything wrong with obviously be taken care of. But they won'tbe able to get me in for a few days anyhow.
    So on to what's happening, when I come to a slow stop It sounds like a quiet grinding almost like a rock in a pad or a cracked pad even. I pulled the pads off, they did have a bit of build up on them. And a couple rotorshad small groves . Nothing bad though. I cleaned everything up there really good. Put em back together and no grinding sound, but my brakes were not as good . After a few miles the brakes were grabbing really good again. But the grinding sound was back as well. It's almost like the compound of these pads are just really hard. So hard that the rotors it appears are wearing more than the pads.
    I thought of just replacing the pads. It is possible the previous owner put different pads on. The car came with two sets of wheels and tireswith some very track ready rubber.
    Anyhow like just wanted someone's opinion on this with a little more knowledge than myself on these cars.
    Thanks in advance

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    Registered User EndlessSea's Avatar
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    is there anything catching on the rotor or getting pushed into the rotor when you step on the brakes?
    when you say the brakes were not as good then after a few miles they started grabbing again. that sounds like the pads heated up and started grabbing harder. this is common of track oriented aftermarket brake pads. they suck when cold but get some heat in them and they grab like crazy.

    what pads are on the car? any mods? or signs of mods? ususally most people return their cars to stock before trading them in. perhaps it has some track oriented pads on it still that the previous owner didnt bother to remove for trade in.

    there are some less legitimate members of this forum(that will remain unnamed) that beat there suby's nearly to death offroad. then return it to stock and sell it to some unknowing buyer as a "stock low mileage" car
    not saying thats what happened to your car but its always a possiblity when buying a used performance car

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    Quote Originally Posted by EndlessSea View Post
    is there anything catching on the rotor or getting pushed into the rotor when you step on the brakes?
    when you say the brakes were not as good then after a few miles they started grabbing again. that sounds like the pads heated up and started grabbing harder. this is common of track oriented aftermarket brake pads. they suck when cold but get some heat in them and they grab like crazy.

    what pads are on the car? any mods? or signs of mods? ususally most people return their cars to stock before trading them in. perhaps it has some track oriented pads on it still that the previous owner didnt bother to remove for trade in.

    there are some less legitimate members of this forum(that will remain unnamed) that beat there suby's nearly to death offroad. then return it to stock and sell it to some unknowing buyer as a "stock low mileage" car
    not saying thats what happened to your car but its always a possiblity when buying a used performance car

    I took the pads out, cleaned everything of really good. There was no visibl . Damage to the pads. The rotors had a bit of wear, as if the pad is a very hard compound. The brakes work very well. Hotter the better.
    But they are loud. It seems like maybe the previous owner put some racing pads on maybe. He was a 55 year old guy with money. Bought the car and didn't like the original tires so he put some really nice Dunlap extreme performance summer tires on.
    There was no signs of modification what so ever. Maybe the guy just liked having great grip and stopping power. As it looks, the pads will outlast the rotors.
    Thanks for the reply. There has been been over 300 views and no replies, just didn't seem right lol

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    Pro Manscaper Mikie13's Avatar
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    A lot of people jump in and jump out and just read. Majority of the people on this site will lurk and don't really know what you're talking about.

    One thing you will learn...STI Brembos are loud. No matter what pad, no matter what rotors...they are gonna grind, squeal, squeak, vibrate, etc.

    I'm on my second STI...and yes, the rotors do wear down much faster than any other normal car. The larger pads create much more friction, which is gonna cause more wear. I've found pads last roughly 25k or so, depending on the pad of course. Rotors can last two cycles at most (being turned/resurfaced after the first one...sometimes after the second one depending on style of driving).
    The Hawk-Eye Alliance #90|The Blobeye Syndicate #0|The Stink-Eye Mob #0|N.E.R.D. Founding Member & #3
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    Registered User SKI.WRX's Avatar
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    My Stoptech street pads make a quiet grinding noise particularly while cold on my 2002. The symptom of "hotter the better" makes me think it is simply a more aggressive pad compound than you are used to.

    Like Mikie13 said, it's likely normal.

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