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New pads & rotors @ 23,600mi (why?)

This is a discussion on New pads & rotors @ 23,600mi (why?) within the Focus RS Maintenance forums, part of the Focus RS Garage category; Originally Posted by WoopsPooped Hey everybody, I had my car in last week for the head gasket recall and ended up getting a new engine. ...

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Thread: New pads & rotors @ 23,600mi (why?)

  1. #11
    RS Specialist maschoff's Avatar
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    Quote Originally Posted by WoopsPooped View Post
    Hey everybody,

    I had my car in last week for the head gasket recall and ended up getting a new engine. It's running great now, despite taking it easy for break-in. 23,600mi but technically ~100 miles on the new engine.

    While I had it in, I asked them to inspect the brakes because I've been trying to get my pads replaced under the maintenance plan I bought before it expires next month and I'm out of pocket.

    I've learned that both my rear pads were at 1mm and there was enough contact happening where they will actually be replacing both my rear pads and rear rotors later this week when the parts come in.
    But yet, I'm at 7mm+ in the front on the Brembos.

    So... are the Ford OEM that crappy?? Am I doing something to cause this type of wear?
    I've had 1 HPDE at Thunder Hill West and the rest has just been daily driving to work and spirited weekend driving in the hills.

    Just wondering if I've missed some type of common issue on here or if I should be alarmed by this. It's quite a wear difference.

    Thanks in advance!
    Is this how you drive
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    Nitrous Blue 2016 Ford Focus RS2 with alloy rims and moonroof (Built 4/20/2016 > Took Possession 6/15/2016)

  2. #12
    Supporting Member Barroux's Avatar
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    Quote Originally Posted by WoopsPooped View Post

    Ok thanks for your feedback. I didn't have any luck with searching first for things related to brake wear, but I'll need to dig some more if you think it was covered already.

    So if you had the same experience as me, do we know WHY? [IMG class=inlineimg]https://www.focusrs.org/forum/images/smilies/smile.png[/IMG]
    It just doesn't make much sense to me why the rear would go so quick. I swear the front pads are made out of literal compressed brake dust based on how much they give off... thought they'd wear first.
    Dont know why! As others mentionned I supposed the pad material was cheap and not upgraded.

    The RS has larger rears rotors than the ST but probably has the same pads. I didnt care much as I had pads left over from the ST. Curious how long better pads will last though, but they’re cheap and easily replaced so that’s not a huge issue.

  3. #13
    Supporting Member WoopsPooped's Avatar
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    Quote Originally Posted by cntrdctn86 View Post
    I wonder if it has something to do with your drive mode? My car has spent 40k of its 46k miles in track mode.
    Mine has been 99% Sport mode with just a handful of exceptions where I forgot to change it until I noticed the steering wheel didn't weigh enough and changed it at the next stop.

    Quote Originally Posted by maschoff View Post
    Is this how you drive
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    Yes. I live in California, we all do it this way. Don't you?
    WoopsPooped

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    Brake parts cleaner.

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    So I had my rear pads replaced at the 30K service, almost completely gone but no issues with the rotors. What my service department told me - and I'm not taking this as authoritative - is that on the Focus, the rear brakes engage first. So they're telling me that if you tend to do a lot of gentle braking, it'll wear those pads much quicker.

    I'm still unsure of whether I buy this explanation. However, shot out to Al Packer's White Marsh Ford as they gave me a massive discount on that pad job for no reason I can tell. Got out for next to nothing.

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    Supporting Member nicklulu's Avatar
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    I have not hit my miles on my RS but, When I had my Evo I replaced my pads around the same miles (23000-26000 miles).

    I'm okay with mileage on the RS then if that Is the case.

    Im sure if i drive it like a regular focus I can get better life on it. It really tried being gentle on the gas and break on trip to LA and I got 27mpg (no boost and nothing beyond 65mph)
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    Quote Originally Posted by WoopsPooped View Post
    Hey everybody,

    I had my car in last week for the head gasket recall and ended up getting a new engine. It's running great now, despite taking it easy for break-in. 23,600mi but technically ~100 miles on the new engine.

    While I had it in, I asked them to inspect the brakes because I've been trying to get my pads replaced under the maintenance plan I bought before it expires next month and I'm out of pocket.

    I've learned that both my rear pads were at 1mm and there was enough contact happening where they will actually be replacing both my rear pads and rear rotors later this week when the parts come in.
    But yet, I'm at 7mm+ in the front on the Brembos.

    So... are the Ford OEM that crappy?? Am I doing something to cause this type of wear?
    I've had 1 HPDE at Thunder Hill West and the rest has just been daily driving to work and spirited weekend driving in the hills.

    Just wondering if I've missed some type of common issue on here or if I should be alarmed by this. It's quite a wear difference.

    Thanks in advance!
    Brakes have several parameters which affect performance and distribution of pressure to front and rear: there are speed of vehicle, differential of pressure (how fast you apply brakes), temperature of fluid, etc.. If you not aggressive driver and applying brakes slow rear pads engage first as smaller piston required less fluid to move pads to the same distance and flow/pressure distribution doesn't work in this case. In addition, front and rear pads made from different material and friction surface at rear much less, but work almost the same amount of time. So if you taking your RS to the track you might wear your front pads first, as daily drive rears will most likely wear first.
    RocketRS and WoopsPooped like this.

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    Quote Originally Posted by Grimlock View Post
    The RS doesn’t have upgraded brakes, it uses the ST brakes. Also it does brake based vectoring on top of the RDU. Everything I’ve read says the rear brakes go first on the RS, I assume due to the above. Every performance car I’ve owned prior to the RS in my life went through front brakes more quickly.


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    ^ This. Seems much of the variability in rear wear is the driver, although the FoRS does burn through them compared to other cars based on what I know of others' experience.

    My own experience seems unusual in that I've gone through nearly two sets of front pads (first OE, then EBC Yellow) without needing to replace the rears. ...they are getting close though at 34k (~1k of which is track or AutoX).
    Last edited by Molez93; 05-31-2019 at 11:14 AM.
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    Appears to be typical. I along with others saw the same thing - the rear lasts right around 30k miles. Another thread on the topic:
    https://www.focusrs.org/forum/29-foc...worn-down.html
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    Quote Originally Posted by Moxman View Post
    My belief is that Ford upgraded the front brakes on the RS, knowing it would see some track use; but neglected the rear brakes. They are the same as the regular Focus, with the exception of Nitrous Blue painted calipers. Maybe the pad material spec. for the RS is different...but I don't know about that. I guess the solution is to upgrade the pads to a better specification. Mountune street pads come to mind, as they have a higher coefficient of friction than the factory pads and promise less dust. That might just be the solution to the wear and excessive dust issues?
    Notably, the rotors also wear out for many users as well. I needed both rotors and pads, which is crazy to me as historically rotors had lasted more than a single set of pads on other vehicles, but here we are
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    RS Veteran Grimlock's Avatar
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    Quote Originally Posted by Alexander View Post
    Brakes have several parameters which affect performance and distribution of pressure to front and rear: there are speed of vehicle, differential of pressure (how fast you apply brakes), temperature of fluid, etc.. If you not aggressive driver and applying brakes slow rear pads engage first as smaller piston required less fluid to move pads to the same distance and flow/pressure distribution doesn't work in this case. In addition, front and rear pads made from different material and friction surface at rear much less, but work almost the same amount of time. So if you taking your RS to the track you might wear your front pads first, as daily drive rears will most likely wear first.
    I don’t think you can generalize that on all cars that the rear brakes engage first when stopping slowly. This is 100% adjustable by the manufacturer. Just like every race car I’ve driven has a brake bias dial in the cockpit. With the electronics in cars today’s, I’m sure they can be very specific with how they apply brakes in every situation. That said, the way they are working in the RS, the rears go first which is odd for a performance car. I’m guessing the engineers probably would have preferred upgraded rear brakes on the RS, but the bean counters won.


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