Author Topic: Front Brake Howl/Growl at Low Speed  (Read 4702 times)

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  • Offline nasher75   us

    • MTS 950 Member  ‐    33
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    Offline nasher75

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    Front Brake Howl/Growl at Low Speed
    on: October 22, 2021, 02:08:33 pm
    October 22, 2021, 02:08:33 pm
    About 1 month after I purchased my 950S, I started to experience a brake howl/shudder when coming to stops.  I'd guess the noise starts when I'm modulating off the brakes a little just before a full stop, maybe around 10 MPH.  Asked the dealer about it and they told me it was normal for bikes with floating rotors.  That's bullsh#t.  Had plenty of other bikes with fully and partially floating rotors and never experienced this.

    Caliper and Rotor mounting bolts are all tight.

    Thinking, since we are in the middle of a storm at the moment, that I might pop off the front wheel to scuff/sand the full surface of the rotors and pop the front pads out and do the same.  Start with fresh surfaces and go though brake bed-in again to see if it helps. 

    Anyone else experience this on their 950?
    Hunt Hard, Kill Swiftly, Waste Nothing, Offer No Apologies...

  • Offline Colywobbles   gb

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    Offline Colywobbles

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #1 on: October 22, 2021, 10:01:54 pm
    October 22, 2021, 10:01:54 pm
    I have the same problem on my 950s, I’m now 8,000 miles in and not found a solution. It’s been back to the dealer and I got a similar response, “sintered brake pads are noisy”, never been a problem on any of my previous bikes though. I’ll be interested to see if you resolve your problem.

  • Offline gmf1   au

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    Offline gmf1

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #2 on: October 24, 2021, 12:18:15 am
    October 24, 2021, 12:18:15 am
    My front and rear sounded like nails on chalk board when new. Front is fine now but rear still does it when I come to a stop.

  • Offline Jcastellvi   es

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    Offline Jcastellvi

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #3 on: October 28, 2021, 10:39:42 am
    October 28, 2021, 10:39:42 am
    It´s completely normal. Do not worry at all.

  • Offline nasher75   us

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    Offline nasher75

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #4 on: November 17, 2021, 06:22:49 pm
    November 17, 2021, 06:22:49 pm
    It's been a while since I posted this, but I did eventually pull the pads, sanded them down and sprayed them clean with brake clean.  Scuffed the rotor surfaces and did an aggressive bed-in to heat the rotors and transfer pad material.  Have a nice uniform material transfer on the rotors.  I've done a couple rides since and have not heard the noise return yet, but it didn't start happening on my bike from new until I was around 700 miles. 

    I did some searching on this and found others who had this on this particular model and found that aftermarket pads made the difference.  Most people reported the best results from SBS pads, but hard to say how long they ran them to confirm the growl and shuddering went away.  I'm still convinced this is not normal/acceptable.  I've had several motorcycles of different types and never had this before.  The occasional squeal is normal on most brakes, but this is different.  This is only happening on the fronts as I cannot reproduce the noise when only using rear brake.

    Only time will tell, so I'll keep coming back from time to time to update this post and when I do need new pads, I'm planning to try the SBS 900SP's.  I've had care with factory Brembo pads and rotors and they were always sub par, especially the factory pad compounds. 
    Hunt Hard, Kill Swiftly, Waste Nothing, Offer No Apologies...

  • Offline Crempel64   us

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    Offline Crempel64

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #5 on: November 23, 2021, 02:36:04 pm
    November 23, 2021, 02:36:04 pm
    Had the same thing too. Earplugs helped, but still drove me nuts. I tried removing pads and sanding them, scuffing and cleaning the rotors and putting some grease on the back of the pads. Worked for a little while, but the noise came back. Now I've replaced the front pads with EBC HH and things are quiet up front. This allows me to hear the squealing from the rear brakes now! Cleaned, sanded and greased those and quite again. I agree, kind of annoying. Not the biggest deal though.

  • Offline nasher75   us

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    Offline nasher75

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #6 on: December 23, 2021, 08:23:03 pm
    December 23, 2021, 08:23:03 pm
    I installed the SBS Evo Performance Pads after sanding down the rotors again.  I followed SBS bed in suggestion and they seemed ok until the 400-500 mile interval and the shuddering/growling is back.  I'm just going to live with it and wait until rotors need replacing before I go through replacing everything.  Seems to me that it must either be rotor construction or some "activeness" in the linked brakes or ABS system.

    My ear brakes have always been fine.  No squeal and very good braking power, as far as rear brakes go.
    Hunt Hard, Kill Swiftly, Waste Nothing, Offer No Apologies...

  • Offline JWCIV   us

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    Offline JWCIV

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #7 on: January 03, 2022, 08:46:38 pm
    January 03, 2022, 08:46:38 pm
    Happens to me with the rear already at 600 miles. Premium? Exotic? Italian sweet machine? Pulling up next to a 2008 Suzuki VStrom at a light making that noise is NOT why I spent top dollar for a sport/tour/adventure world renowned Multistrada. I also have never experienced this except in a sports car when reversing at very slow speeds (I'm sure there's some scientific reason why this occurs). I plan to scuff the pads perpendicular to their native wear to see if it has any affect.
    Come visit ... let's ride

  • Offline Mutleycrew   gb

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    Offline Mutleycrew

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #8 on: January 07, 2022, 05:50:01 pm
    January 07, 2022, 05:50:01 pm
    I fear I'm repeating myself as I have mentioned front brake discs in another stream but my experience was severe judder at all speeds from 5 to 100mph after the bike had 4,000 miles on the clock. Turned out to be warped discs. After they had been changed, EBC pads were fitted but later I was told by a different and pretty knowlegable dealer that in their experience, they chewed the discs up pretty quickly. I have since reverted to the Ducati pads and 4000 miles later they seem perfect.

  • Offline Paul_Smith   ie

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    Offline Paul_Smith

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    Re: Front Brake Howl/Growl at Low Speed
    Reply #9 on: January 08, 2022, 12:48:36 am
    January 08, 2022, 12:48:36 am
    *Originally Posted by Mutleycrew [+]
    I fear I'm repeating myself as I have mentioned front brake discs in another stream but my experience was severe judder at all speeds from 5 to 100mph after the bike had 4,000 miles on the clock. Turned out to be warped discs. After they had been changed, EBC pads were fitted but later I was told by a different and pretty knowlegable dealer that in their experience, they chewed the discs up pretty quickly. I have since reverted to the Ducati pads and 4000 miles later they seem perfect.
    Not sure how 'knowledgeable' your dealer was. Pads that stop you faster will increase disc wear... Duh, yeah. Brakes work by converting the bikes kinetic energy into thermal energy by applying friction between disc and pad. More friction = more heat = faster stopping = more wear.

    EBC picked up a bad rep in the eighties when they were fitted to HDs which had a mild steel disc (singular). The bike stopped quickly (for a HD) but the discs wore out quickly.

    Discs and pads work as a 'matched pair', as in the pads that work well with one brand of disc can cause problems on another. I have had excellent experience with EBC HH pads on Japanese, German and Italian OEM discs on many bikes over many years, and never had a disc issue, but I had one particular bike where they just didn't work.

     



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