Giant SLR1 carbon wheelset - is this a problem?
Results 1 to 8 of 8
  1. #1
    RoadBikeReview Member
    Reputation:
    Join Date
    Aug 2006
    Posts
    2

    Giant SLR1 carbon wheelset - is this a problem?

    I really love my Giant SLR1 carbon wheelset but the front wheel has developed a series of strange lines on the spoke side. They go almost all the way around but never open up into cracks or gaps. No they are not scratches (note they go under the sticker).

    Never been crashed, no extreme temps, no off road, etc.. just regular road use. Vittoria Rubino Pro clinchers 700x23, ~115 psi (lower than recommended max). I'm 158 lbs.

    No response from Giant by email (3 days).

    Could it just be an issue with clearcoat or something (?)?

    IMG_3450.jpg.
    Last edited by bchains; 08-29-2019 at 07:42 PM.

  2. #2
    RoadBikeReview Member
    Reputation:
    Join Date
    Oct 2013
    Posts
    3,269
    I would take them back..... Those cracks could explode at any minute, or not!
    BANNED

  3. #3
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    14,516
    115psi?!? I don't even know what size they are and that's too much.


    If you've got that much pressure in them and they're still in one piece they're probably fine. Just so we know...what size tires?


    ETA: I'm an idiot, the size is right there in your post. But that's still wayyyyyyy to much pressure.
    Last edited by cxwrench; 08-30-2019 at 02:55 PM.
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  4. #4
    RoadBikeReview Member
    Reputation:
    Join Date
    Feb 2002
    Posts
    21,084
    Quote Originally Posted by bchains View Post
    Vittoria Rubino Pro clinchers 700x23, ~115 psi (lower than recommended max). I'm 158 lbs.
    You should be running 90 F, 100 R MAX at your weight and that tire width.

  5. #5
    RoadBikeReview Member
    Reputation:
    Join Date
    Aug 2006
    Posts
    2
    To close the loop on this... I went to my LBC and the mechanic said he has seen this before with Giant SLR1 wheels. Even showed me another wheel in the shop that had it. Then with me there he called the Giant rep/warranty person and described the problem and emailed them pics of my rims in real time. Giant said they had also seen this before and its "the way the carbon layup settles in over time." Apparently its the edges of a few of the layers are now just becoming more apparent (somehow??!). They said the wheels are totally safe to continue to ride even downhill at high speed.

    I don't know enough about carbon layup and wheel construction to dispute this, and because there isn't any sort of crack or anything I can feel with my fingers I'm going to believe what they are telling me.

    Will report back if anything more happens.

  6. #6
    'brifter' is a lame word.
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    Posts
    14,516
    Please tell me you've lowered the pressure some. I'd definitely recommend 25mm tires as well.
    I work for some bike racers
    I've got some bikes, some guns,
    and a bunch of skateboards

  7. #7
    [REDACTED]
    Reputation: Lombard's Avatar
    Join Date
    May 2014
    Posts
    9,828
    OMG!!! 115 PSI at 158 lbs.????? At your weight, I would be running 80 PSI front/100 PSI rear with those tires unless you are carrying a 20+ lb. bag on your bike.
    "With bicycles in particular, you need to separate between what's merely true and what's important."-- DCGriz, RBR.

    “Statistics are like bikinis. What they reveal is suggestive, but what they conceal is vital.” -- Aaron Levenstein



  8. #8
    RoadBikeReview Member
    Reputation: ROAD&DIRT's Avatar
    Join Date
    Mar 2009
    Posts
    1,014
    That looks wicked scary to me, but I'm not wheel expert.

    I agree about the tire pressure your running... I'm 5.6 weigh 132 and run my Panaracer RACE evo 700/25c at 65psi Front and 80psi Rear with no issues
    "I refuse to be afraid of tomorrow, for I have seen yesterday & I love today!!"

    "There are only two ways to establish competitive advantage: do things better than others or do them differently."

    "Ability may get you to the top, but it takes character to keep you there."

    2009 SCOTT Speedster w/Ultegra 6800
    2007 IRONHORSE HT

Similar Threads

  1. Can I install Di2 on Giant TCX SLR1?
    By manamana in forum Components, Wrenching
    Replies: 9
    Last Post: 02-27-2017, 11:04 AM
  2. Mavic R-SYS or Giant P-SLR1
    By TJay74 in forum Wheels and Tires
    Replies: 23
    Last Post: 03-27-2014, 10:58 AM
  3. Anybody ridden the new Giant P-SLR1 Aero wheels...Thoughts?
    By rs_herhuth in forum General Cycling Discussion
    Replies: 1
    Last Post: 09-16-2013, 03:27 PM
  4. Replies: 0
    Last Post: 11-03-2011, 12:21 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT ROADBIKEREVIEW

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.