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  1. #1
    Senior Member Three Rings
    Join Date
    Jul 28 2009
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    45624
    Location
    Jupiter Florida

    Rotors Break In?

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    I just received new rotors for my 2012 s4 and it came with instructions that stated the rotors must be broken in. It says engage medium breaking from 40 to 5-10 mph 4 times, then go 60 and aggressively break to to 15 mph and repeat this 8 times. Let the car then sit for 30 minutes. Is this actually necessary? I'm not sure where in the world I could conduct this break in on public roads after putting new rotors on....
    Current: 2012 Audi S4 3.0TFSI, Ibis White, Black/Silver Alcantara Interior, Navigation Package, B&O, Rear Acoustic Parking Sensors, Sports Differential, Carbon Atlas Inlays, 19" Peelers, AWE Exhaust, V1 for protection.

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  2. #2
    Established Member Three Rings
    Join Date
    Jan 11 2017
    AZ Member #
    390473
    Location
    Houston, TX - USA

    Yes. It’s important to bed the pads with the new rotors. I do it at an a small local airport’s streets around 10 PM when there’s no traffic around


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  3. #3
    Senior Member Three Rings USAF_Danny's Avatar
    Join Date
    Mar 05 2015
    AZ Member #
    318751
    My Garage
    2011 Audi S4, 2017 Honda Civic EX
    Location
    Rapid City, SD

    Absolutely necessary.


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  4. #4
    Established Member Two Rings The Machine's Avatar
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    Aug 08 2017
    AZ Member #
    404578
    Location
    Magnolia NJ

    When I do brakes on any of my cars I always have to wait until 11pm or so to take it out to do a proper bed procedure. Any other time of the day would be a hassle because of other people on the road.

  5. #5
    Veteran Member Four Rings sacandagaD's Avatar
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    Jul 02 2013
    AZ Member #
    118210
    My Garage
    2015 S4 P+, 2015 BMW X3 M-sport, 2005 Honda Element, On order: 2018 Porsche Macan GTS
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    I don't know about parking for 30 minutes afterward, but you should not come to a complete stop until your brakes/rotors have had a chance to cool down.
    2015 P+, Sepang Blue, Black/Black Alcantara, Tech package, Sport Diff, DSG, Carbon inlays, B&O, Hard wired V1, CR-15, 3M film, 19" PSS/Hartmann Rotor reps, Akebonos, LED interior lights, ZxE fogs, CW Pro, Soundakator mute, RS Rep grille.

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  6. #6
    Senior Member Three Rings
    Join Date
    Mar 28 2016
    AZ Member #
    370916
    Location
    NY

    Quote Originally Posted by sacandagaD View Post
    I don't know about parking for 30 minutes afterward, but you should not come to a complete stop until your brakes/rotors have had a chance to cool down.
    This is by far the most important step in bedding in pads.

  7. #7
    Senior Member Three Rings
    Join Date
    Jul 28 2009
    AZ Member #
    45624
    Location
    Jupiter Florida

    very interesting, I've never even heard of a shop advising their customers of this break in procedure. I would assume the majority of audi owners who are not on the forums and bring their car in for new rotors dont do this process.

  8. #8
    Senior Member Three Rings
    Join Date
    Mar 28 2016
    AZ Member #
    370916
    Location
    NY

    Quote Originally Posted by audifan22 View Post
    very interesting, I've never even heard of a shop advising their customers of this break in procedure. I would assume the majority of audi owners who are not on the forums and bring their car in for new rotors dont do this process.
    A buddy has his brakes done in his Jaguar XF, and they did not bed the brakes in properly (or at all). He almost crashed leaving the shop. He brought it back and they apologized for not taking the car out after the work was done and bedding the brakes in for him.

  9. #9
    Veteran Member Four Rings theweebabyseamus's Avatar
    Join Date
    May 12 2008
    AZ Member #
    28667
    Location
    Bay Area, CA

    Quote Originally Posted by audifan22 View Post
    very interesting, I've never even heard of a shop advising their customers of this break in procedure. I would assume the majority of audi owners who are not on the forums and bring their car in for new rotors dont do this process.
    It doesn’t take long, I imagine a good shop does it for the client.

  10. #10
    Senior Member Three Rings USAF_Danny's Avatar
    Join Date
    Mar 05 2015
    AZ Member #
    318751
    My Garage
    2011 Audi S4, 2017 Honda Civic EX
    Location
    Rapid City, SD

    Quote Originally Posted by audifan22 View Post
    very interesting, I've never even heard of a shop advising their customers of this break in procedure. I would assume the majority of audi owners who are not on the forums and bring their car in for new rotors dont do this process.
    Maybe it's because the bedding procedure is done for them?

    It's not hard to do. Just a few big stops here and there.

    Be safe.
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    []S4 | EPL Stage 2

  11. #11
    Veteran Member Four Rings blackfunk's Avatar
    Join Date
    Jul 12 2012
    AZ Member #
    96697
    Location
    NY

    Bedding the brakes is not NECESSARY. It helps - significantly - in mating the rotors and pads together by essentially a) removing oils and deposits etc from the rotor b) leaves pad materials on the rotor enabling a better biting surface. It is a process that happens naturally over time and is really only necessary (that word again) if you're driving in a spirited fashion imediately after changing your rotors. As was stated before DO NOT sit on your brakes while they're hot as it will leave pad material on the rotors making it feel like your rotors are warped. The bedding process is also something that should be done periodically as well. Not just when changing rotors and/or pads.
    Life has taught me never try to make something idiot proof, they'll simply come up with a better idiot.

  12. #12
    Veteran Member Four Rings
    Join Date
    Aug 05 2010
    AZ Member #
    62317
    My Garage
    2007 Audi A4 3.2 Quattro; 2010 Acura RDX (my wife's vehicle)
    Location
    Central IL

    Quote Originally Posted by USAF_Danny View Post
    Absolutely necessary.


    Sent from my iPhone using Tapatalk
    Ditto. Especially for Audis. Proper bedding reduces or eliminates squealing on stock pads and rotors.
    2014 Monsoon Gray S4 Prem+ | S-Tronic | LH Magma Nappa leather interior | Carbon Atlas inlays | Sports Diff | Adaptive Damping suspension | 19” peelers | MMI Nav | Bang & Olufsen | tints | VAG COM mods via OBDeleven | Autostyle Mats

  13. #13
    Established Member Two Rings BucDan's Avatar
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    Jul 19 2017
    AZ Member #
    403220
    Location
    San Diego, CA

    Do it late at night! Going 40-5 4 times can be done in like 60 seconds, total. 60 to 15 8 times can be done in like 3 minutes! Thankfully, our cars can accelerate fast enough in 100 yards and brake, and repeat, often enough to finish it in under a mile worth of driving for bedding. Then you can let it cool by cruising around on the freeway at low speeds for about 10 minutes.

    I would even go the extra mile at attach a piece of paper on the back of my car that says "Bedding my brakes", in case a police officer was wondering what the heck i was doing.


    Oh, and not everyone lives next to a long strip of road, so when you do drive to that location, go easy on the brakes.

  14. #14
    Stage 3 Forum Advertiser Four Rings Jake@JHM's Avatar
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    Aug 31 2011
    AZ Member #
    80618
    My Garage
    MK7-GTI-APR-STG2-Grand-Cherokee-R6-Raven-IRON-1250
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    Lathrop

    Improper bedding can lead to pad deposits which will give you the illusion that your rotors are "warped". If your rotor manufacturer supplies a bed in procedure it is highly recommend you follow them.

  15. #15
    Senior Member Three Rings
    Join Date
    Mar 28 2016
    AZ Member #
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    Location
    NY

    Quote Originally Posted by Jake@JHM View Post
    Improper bedding can lead to pad deposits which will give you the illusion that your rotors are "warped". If your rotor manufacturer supplies a bed in procedure it is highly recommend you follow them.
    Yup. Virtually every time someone thinks their rotors are "warped", it's actually chatter from uneven pad material transfer on the rotor. Contrary to popular belief, rotors don't warp.



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