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Possible Solutions? 2017 S5 Rear Brake Caliper Clearance

Last post 06-25-2018 3:06 PM by Kookie. 5 replies.
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  • 06-24-2018 11:33 AM

    • Kookie
    • Top 50 Contributor
    • Joined on 02-04-2012
    • Toronto
    • Posts 423

    Possible Solutions? 2017 S5 Rear Brake Caliper Clearance

    I just installed a set of Pirelli PZero Velo 25mm tires on my 2017 S5. The front tire clearance and frame clearance is fine but the rear caliper clearance only appears to have about .5mm clearance. I think the plastic mounting piece sits too low. I was thinking adding some spacers might "raise" the caliper. Previously I had Continental 4000s II 23mm because the 25mm had the same issue. (I think tire rubbed while riding and hitting bumps)

    Also considering installing Shimano r8000 brake caliper (seems to have more clearance). Any other suggestions? (see pics below)

    20180624_112123 20180624_112228
    2013 Cervelo R5 SRAM Red
    2017 Cervelo S5 SRAM eTap
    2018 Cervelo R5 Classics Edition Limited Frameset
  • 06-25-2018 1:21 AM In reply to

    Re: Possible Solutions? 2017 S5 Rear Brake Caliper Clearance

    Not only that, it will also rub the chainstays under hard pedaling. Remember a 25MM tire is probably going to measure 27 and the S5 is designed for 25 max. The conti 23 when used with widght rims should meassure 25. I had the same question last week and a cervelo rep explained that to me on this same forum.
    S5 2016 MTN Qhubeka Team Edition
    S5 2014 WWD DA Di2
  • 06-25-2018 1:23 AM In reply to

    Re: Possible Solutions? 2017 S5 Rear Brake Caliper Clearance

    Here is the post https://forums.cervelo.com/forums/t/16534.aspx
    S5 2016 MTN Qhubeka Team Edition
    S5 2014 WWD DA Di2
  • 06-25-2018 6:36 AM In reply to

    • Kookie
    • Top 50 Contributor
    • Joined on 02-04-2012
    • Toronto
    • Posts 423

    Re: Possible Solutions? 2017 S5 Rear Brake Caliper Clearance

    Thanks for your reply...I ordered a DA brake caliper as I think it has better clearance. When I had the 25mm Conti's my only concern was the brake caliper, chainstays seem to be OK. I'm not a "powerful" rider more of a spinner.

     

    When I had the 23mm Conti 4000s II, I had about 2mm of brake caliper clearance, currently only have less than 1mm.
    2013 Cervelo R5 SRAM Red
    2017 Cervelo S5 SRAM eTap
    2018 Cervelo R5 Classics Edition Limited Frameset
  • 06-25-2018 12:58 PM In reply to

    Re: Possible Solutions? 2017 S5 Rear Brake Caliper Clearance

    If you want to be sure, put a black take in the inside of the chainstays and go for a ride. Come back and check the tape and you will see the tires mark on the tape. Better safe than sorry :)
    S5 2016 MTN Qhubeka Team Edition
    S5 2014 WWD DA Di2
  • 06-25-2018 3:06 PM In reply to

    • Kookie
    • Top 50 Contributor
    • Joined on 02-04-2012
    • Toronto
    • Posts 423

    Re: Possible Solutions? 2017 S5 Rear Brake Caliper Clearance

    I'm sure it will be fine...

    I already rode a few times with the Conti 4000s II 25mm when I first got my S5, no marks inside the chainstays, just the brake caliper clearance at the top the issue for me. 

     

    2013 Cervelo R5 SRAM Red
    2017 Cervelo S5 SRAM eTap
    2018 Cervelo R5 Classics Edition Limited Frameset
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