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

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

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    Supporting Member WoopsPooped's Avatar
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    New pads & rotors @ 23,600mi (why?)

    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!
    WoopsPooped

    '16 SB RS2 - bought on impulse June '16

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    RS Specialist cntrdctn86's Avatar
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    I didn't measure my pads, but I changed them around 20k and there was maybe 10-15% left up front, but over 50% in the rear.


    Edit!
    If memory serves, I saved both sets of pads and put them in storage as backups, so the fronts had to have had more than 10-15%
    2016 Focus RS - Stealth Gray, RS2, Moonroof - Ordered 10/12/15, Selected 11/12/15, Built 4/15/16 BMF, Shipped 6/14/16, Delivered 7/22/16
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    Supporting Member WoopsPooped's Avatar
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    Quote Originally Posted by cntrdctn86 View Post
    I didn't measure my pads, but I changed them around 20k and there was maybe 10-15% left up front, but over 50% in the rear.


    Edit!
    If memory serves, I saved both sets of pads and put them in storage as backups, so the fronts had to have had more than 10-15%
    Your experience is what I would expect.... I assumed a roughly 60/40 front bias on the brakes.... not a 25/75 rear bias wear like mine LOL
    Anyone? I'm going to have to ask the dealer more questions about what their theory is...
    WoopsPooped

    '16 SB RS2 - bought on impulse June '16

    Brake parts cleaner.

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    Supporting Member Barroux's Avatar
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    I changed the rear pads at approx.32k km and the fronts were still at 80% despite a full track day. The rears were near worn down and had cracks on the pad material (presumably from all the heat from the track day).

    There are other threads about this issue I think. Rear pads wearing faster than the front is normal on this car I believe (stock pads I mean). I’m at 49k km now and two full track days and only minimal additional wear in the front last time I checked.

    I used the hawk hp+ pads I had left from my previous ST when I swapped the rear pads. Have not checked them yet though, but they should still be fine (only 18k km and one track day on those).

    Maybe someone will post the link to the other thread about the rear pads.

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    Supporting Member WoopsPooped's Avatar
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    Quote Originally Posted by Barroux View Post
    I changed the rear pads at approx.32k km and the fronts were still at 80% despite a full track day. The rears were near worn down and had cracks on the pad material (presumably from all the heat from the track day).

    There are other threads about this issue I think. Rear pads wearing faster than the front is normal on this car I believe (stock pads I mean). I’m at 49k km now and two full track days and only minimal additional wear in the front last time I checked.

    I used the hawk hp+ pads I had left from my previous ST when I swapped the rear pads. Have not checked them yet though, but they should still be fine (only 18k km and one track day on those).

    Maybe someone will post the link to the other thread about the rear pads.
    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?
    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.
    WoopsPooped

    '16 SB RS2 - bought on impulse June '16

    Brake parts cleaner.

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    RS Specialist cntrdctn86's Avatar
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    There is no way a car with torque vectoring wears the rears faster than the fronts normally...
    maschoff likes this.
    2016 Focus RS - Stealth Gray, RS2, Moonroof - Ordered 10/12/15, Selected 11/12/15, Built 4/15/16 BMF, Shipped 6/14/16, Delivered 7/22/16
    1994 Mazda Miata - Laguna Blue, Turbocharged

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    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?
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    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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    Molez93 likes this.
    Grimlock
    2017 Nitrous Blue Focus RS1- No options, built 9/27/2016, delivered 1/9/17
    "Dynamically, the RS is in a different league than the others, maybe even playing a different sport." - Car & Driver, May 2016 comparing the Focus RS to the WRX STI and Golf R

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    Looks like @Moxman had similar thoughts.


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    Grimlock
    2017 Nitrous Blue Focus RS1- No options, built 9/27/2016, delivered 1/9/17
    "Dynamically, the RS is in a different league than the others, maybe even playing a different sport." - Car & Driver, May 2016 comparing the Focus RS to the WRX STI and Golf R

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    RS Specialist cntrdctn86's Avatar
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    I wonder if it has something to do with your drive mode? My car has spent 40k of its 46k miles in track mode.
    maschoff likes this.
    2016 Focus RS - Stealth Gray, RS2, Moonroof - Ordered 10/12/15, Selected 11/12/15, Built 4/15/16 BMF, Shipped 6/14/16, Delivered 7/22/16
    1994 Mazda Miata - Laguna Blue, Turbocharged

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