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  1. #1
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    How to fill small gashes in tire?

    Hi everyone,

    I recently got a gash in my tire tread. ~1cm long. Horizontal direction. Looks like a crack, not anything gaping or real bad. But it is deep. But not through belt. New tire - only a couple months old. 700 x 25. I took it to the shop, and they said it is fine to ride on.

    It is a Conti Gatorskin with a Tuffy liner inside.

    Should I leave it be, or fill it so road stuff doesn't get in it? Will filler like Super Glue just break up and grind away in there and cause more wear down deep?

    What to use? Super glue, hot rubber? Please advise. Thanks or any help.
    Last edited by lungimsam; 05-25-12 at 06:38 PM.

  2. #2
    Galveston County Texas 10 Wheels's Avatar
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    Super glue works for some cuts.
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  3. #3
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    Personally, I would just get another tire, but silicone sealer in a tube might fill your need.

  4. #4
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  5. #5
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    I have used Shoe Goo which is a silcone type material used to repair athletic shoe bottoms. It seems to work reasonably well and can be bought in the shoe department at Wally WWorld. Roger

  6. #6
    Senior Member Jed19's Avatar
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    +1 on Shoe Goo (Black).

    I have been using it to fix small holes in tires forever. I fill the hole with Shoe Goo and scrape flat with a putty knife.
    Regards,

    Jed

  7. #7
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    I'll try the Shoo Goo. Let it set up overnight? How long till I can ride on it?

  8. #8
    Senior Member catonec's Avatar
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    I would most likely replace it but if you dont feel like you got your moneys worth yet then I would reinforce the inside of the tire with a large patch just in case, and continue to ride it until it fails completely.
    2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
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  9. #9
    Constant tinkerer FastJake's Avatar
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    Replace the tire? I have a tire with probably a dozen ~1cm cuts. I haven't treated them but so far the tire has been holding up just fine. As long as the fabric isn't damaged and there's no bulging you're fine.

    Shoe Goo seems like the best option since it doesn't get rock hard, it stays in a soft rubbery state similar to the tire itself.
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  10. #10
    Senior Member MudPie's Avatar
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    Quote Originally Posted by FastJake View Post
    Replace the tire? I have a tire with probably a dozen ~1cm cuts. I haven't treated them but so far the tire has been holding up just fine. As long as the fabric isn't damaged and there's no bulging you're fine.

    .
    +1.

    I easily have had a few "micro-cuts" (that's what I call them) on each tire for the past 14,000 miles, and I've never had a tire failure due to the cuts.

  11. #11
    Senior Member catonec's Avatar
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    Quote Originally Posted by FastJake View Post
    Replace the tire? I have a tire with probably a dozen ~1cm cuts.
    me personally, on my bike, if it was bad enough to feel like I had to bring it in to the shop, and then post about it on an online forum, yes I would replace it but I like spending money and hate getting stranded on the road 30 miles from home.
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  12. #12
    Senior Member 1FJEF's Avatar
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    Quote Originally Posted by 10 Wheels View Post
    Super glue works for some cuts.

    I've tried the two part super glue & it seems to stay in a cut quite well, but it is totally rock hard- no flex, (apply with the tire inflated) that shoe stuff seems a better way to go.

  13. #13
    Desert Rat
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    I would just keep an eye on it. If it gets bigger or bulges replace it. If it's all the way through then put a boot (tire patch) on it.
    Have I mentioned that I love riding my bikes?
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  14. #14
    Senior Member Jed19's Avatar
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    Quote Originally Posted by 1FJEF View Post
    I've tried the two part super glue & it seems to stay in a cut quite well, but it is totally rock hard- no flex, (apply with the tire inflated) that shoe stuff seems a better way to go.
    Yep, this is why I prefer and use Shoe Goo. It dries into something flexible, as opposed to glue, which dries hard and can become brittle as it ages.

    Shoe Goo is good stuff for fixing small tire holes and cuts. A caveat though: do not fix a tire whose fabric has been compromised.
    Regards,

    Jed

  15. #15
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    Thanks for the tips. I am going to get some Shoe Goo in the next day or two.
    The shop mechanic guy said it is fine to ride on, especially since I have the Tuffy liner in there. The fabric seems fine.
    If I buy another tire, this could happen again in the first few miles. So I feel that this is a part of tire usage and I just need to cover it up so nothing gets in the crack and so the Gatorskin belt will be protected.
    I check my tires regularly for holes, bulges, sidewalls, etc. anyway. So I'll keep an eye on it.

    I just can't believe you have to blow 50$ on a new tire every time you get a small cut in the tread. As a matter of fact, this tire was a replacement for another tire that got a small hole in it.
    I checked the tire the other day, and the cut seems smaller than what I had remembered. Funny how your mind plays tricks on you.

  16. #16
    Senior Member 1FJEF's Avatar
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    happens to me all the time!

  17. #17
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    Shoo goo, takes too long to cure. Superglue doesn't last very long

  18. #18
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    Another vote for shoo goo. Just let it dry for ~12 hours, then you can ride it.
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    Quote Originally Posted by Beaker View Post
    I know but this is BF.

  19. #19
    Senior Member MNBikeCommuter's Avatar
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    Quote Originally Posted by catonec View Post
    me personally, on my bike, if it was bad enough to feel like I had to bring it in to the shop, and then post about it on an online forum, yes I would replace it but I like spending money and hate getting stranded on the road 30 miles from home.
    Why the attitude? It's a lot cheaper to ask a question and get an answer and learn from others' experiences rather than panic and waste money, and repeat when the next cut comes along.

    I don't even bother filling in cuts. In the dozens of flats over the years, I don't recall any being from stuff lodging in an existing cut. And there have been many, many cuts.

  20. #20
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    Go ride on it until it wears out.

  21. #21
    Senior Member Mithrandir's Avatar
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    Question about the shoe goo... do you deflate the tire before filling it, or leave it inflated?

  22. #22
    Gluteus Enormus mmmdonuts's Avatar
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    Leave it alone. The cuts in my tires fill themselves with dirt and road crud.
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  23. #23
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    Quote Originally Posted by Mithrandir View Post
    Question about the shoe goo... do you deflate the tire before filling it, or leave it inflated?
    I left mine inflated. Worked perfectly! I also put some on the bottom of my shoes so the rubber pads don't wear down.
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    Quote Originally Posted by Beaker View Post
    I know but this is BF.

  24. #24
    Senior Member Jed19's Avatar
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    Quote Originally Posted by Mithrandir View Post
    Question about the shoe goo... do you deflate the tire before filling it, or leave it inflated?
    I do mine while tires are inflated too.
    Regards,

    Jed

  25. #25
    Senior Member Mithrandir's Avatar
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    Ok cool. One more question though. I bought some last year with the advice of a poster here, I was going to patch up a tire, but then the manufacturer said they'd warranty it so I just got new tires instead. The new tires are starting to show their age with many gashes, so I decided to fill them in today... however I ended up getting the clear shoe goo, instead of the black (didn't know there was any black shoe goo!). Does that make a big difference or should the clear patch gashes just as well as the black?

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