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  1. #1
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    Surly Nate 27TPI sidewall stress?

    The sidewall on my Larry 3.8 27TPI tire is really starting to break down. I have about 700 miles on the tire and am starting to get concerned about its reliability. I am running it ghetto tubeless and it is holding air just fine. Just wondering what other may have experienced. I ride it on mostly single track that can be very rocky at times. Thanks for any insight on this.

    Surly Nate 27TPI sidewall stress?-surlylarrysidewallstress001_zpsfaff79ac.jpg
    Last edited by winkster; 04-28-2013 at 12:26 PM.

  2. #2
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    Larry 3.8

    surly you meant larry given the terrain you takes yous chances with reliability.

  3. #3
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    Quote Originally Posted by nvphatty View Post
    surly you meant larry given the terrain you takes yous chances with reliability.
    Fixed it. Thanks
    Any others with experiences with this kind of sidewall issue?

  4. #4
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    Last time I got this it was on a Kenda Klaw XT tire (29 x 2.10) wire bead that I was running with a tube but at lower pressure than written on the side of the tire. When I saw the white marks on the sidewalls, I concluded that this wasn't a use-case the tire was enjoying and then cranked up the pressure.

    I had no failure of the tire until I replaced it out of worn out tread but I didn't took my chance either running it further in low pressure conditions

    My guess is: 27tpi isn't that much into flex and it shows up at a point. Maybe going with a more flexible tire (60 or 120 tpi) would prevent such kind of marks.

  5. #5
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    Yikes - that's not looking good. Time for a new tire.
    Last edited by vikb; 04-29-2013 at 10:51 PM.
    Safe riding,

    Vik
    www.vikapproved.com

  6. #6
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    what psi do those tires usually experience?

  7. #7
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    Quote Originally Posted by boogman View Post
    what psi do those tires usually experience?
    I normally run it at 7-8 psi. The trails here are can be rocky at times so i run that pressure to help smooth out the ride.

  8. #8
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    Not fat tire specific but I've run into this with every single Kenda tire I've ever run. Solution was to quit running Kenda tires, havent had the same issues with Maxxis tires but also dont run any of their more weight weenie tires.

    Looks like the rubber is flexing a lot right there and breaking down, at least thats what I figured with my standard tires. The way it is so regular makes it look like it is from flex and not from rubbing against the odd rock here or there.

  9. #9
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    Are you running the same tire front an aft? Is the wear showing on both? Granted the pressure on both wheels are likely not equivalent..

  10. #10
    Laramie, Wyoming
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    It probably won't blow apart while you're riding it so I'd just run it until I started having issues with it holding air.

  11. #11
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    Surly Nate 27TPI sidewall stress?

    Quote Originally Posted by winkster View Post
    The sidewall on my Larry 3.8 27TPI tire is really starting to break down. I have about 700 miles on the tire and am starting to get concerned about its reliability. I am running it ghetto tubeless and it is holding air just fine. Just wondering what other may have experienced. I ride it on mostly single track that can be very rocky at times. Thanks for any insight on this.

    Click image for larger version. 

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    The exposed casing treads do not bother me.

    The look of the sidewall below the logos looks strange, though.
    mtbtires.com
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  12. #12
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    Quote Originally Posted by shiggy View Post
    The exposed casing treads do not bother me.

    The look of the sidewall below the logos looks strange, though.
    I forgot to mention I am running it ghetto tubeless so the split tube is sticking out from the bead area. Thanks for the input. If I pump up the tire to 30 psi eventually there will be a little bit of Stans leaking through the tire in a couple of spots where you can see the white threading. I figured it would be ok for a while at 7-8 psi but am just looking for anyone with similar experience. Thanks all for your input. i plan on running them for another couple hundred miles if possible before swapping out.

  13. #13
    backwoods and backwards
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    700 miles on rocky trails aint half bad...it'll make 1000 before it fails. I'll be thrilled if I get my tires to last that long here in CT.
    MERCY! MERCY! MERCY!

  14. #14
    Laramie, Wyoming
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    Stans coming through the sidewall of the tire won't hurt at all. I've put a bunch more miles on Surly tires than you have on yours with Stans coming through the sidewall in spots.

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