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Should I be worried about this?

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Old 08-30-18, 10:50 AM
  #1  
Brofessor
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Should I be worried about this?



Small nick on a fairly new Conti GP 4000s II (25mm). Tube is NOT exposed.
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Old 08-30-18, 10:57 AM
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Have you removed the tire to check interior wall? Do that and feel around the area with your fingertips. If it doesn't seem like the nick is deep, you should be fine. It doesn't look much deeper than the tread/design on the edges of the tire.
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Old 08-30-18, 11:02 AM
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Originally Posted by RHETTORIC
Have you removed the tire to check interior wall? Do that and feel around the area with your fingertips. If it doesn't seem like the nick is deep, you should be fine. It doesn't look much deeper than the tread/design on the edges of the tire.
Am I checking if the cut is all the way to the tube? I can see that the cut is not all the way to the tube without removing the tire. My fear is that the cut will expand during a long ride and the tire will be compromised in the middle of a ride.
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Old 08-30-18, 11:09 AM
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Originally Posted by Brofessor
Am I checking if the cut is all the way to the tube? I can see that the cut is not all the way to the tube without removing the tire. My fear is that the cut will expand during a long ride and the tire will be compromised in the middle of a ride.
You're checking to see how thin the other side is. As I said, the depth of your treading looks to be similar. However, if it is deeper than it looks and the bottom of the nick is thin, then your fears would be accurate -- and you should get a new tire. Definitely for those factors first. If the depth of the nick is similar to your treading, I'd say you're good to keep riding on it.
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Old 08-30-18, 12:44 PM
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shoe goo
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Old 08-30-18, 04:35 PM
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I checked the inside of the tire and it feels normal, no thin spots. I am tempted to try shoe goo though
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Old 08-30-18, 04:42 PM
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Don’t worry, be happy! No flat.
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Old 08-30-18, 04:57 PM
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If it were me and there was no evidence the cord was cut, I'd just ride it. Yes, bad things could happen. Something could find its way inside and cause a flat or blowout. But if you put your money down on the tire dying of unrelated causes and you did this many tires, you'd make a lot of money. (Either that or I have been incredibly lucky.)

It wuldn't hurt to look at it occasionally but I doubt you are going to see much change.

Ben
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Old 08-30-18, 04:59 PM
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No.
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Old 08-30-18, 05:02 PM
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I would just ride it if it was my tire.
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Old 08-30-18, 05:33 PM
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Should be fine. I recommend that everybody should be carrying a extra tube, patch kit, and something to boot the tire if it ruptures You shouldn't have an issue with that small cut, but always good to be prepared
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Old 08-30-18, 06:19 PM
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Is shoe goo a legit tire repair? I've tossed a few tires that I thought were goners.
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Old 08-30-18, 06:27 PM
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The structure of your tyre is not made of rubber. At all. Rubber is only a coating.

if the cut is only the rubber then you have nothing to worry about. If it is the woven material underneath then you find yourself at my next point..

Worry. It's harmful. Eliminate its source.
Do you need to do something about a problem? If so, do it. If not, there's no need worrying about it.
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Old 08-30-18, 06:28 PM
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Odd, those tires normally cut on the sidewall, not the tread.

Looks like it's your rear - I'd tell you to move it if it were your front.
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Old 08-30-18, 06:34 PM
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As already mentioned, Shoe Goo in the cut and a piece of clear packing tape on the inside of the tire opposite it for insurance.
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Old 08-30-18, 07:02 PM
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Originally Posted by TrojanHorse
Odd, those tires normally cut on the sidewall, not the tread.

Looks like it's your rear - I'd tell you to move it if it were your front.
A lot less critical on the rear, but still of concern. Tires are your only contact with the road so I take no chances.
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Old 08-30-18, 07:10 PM
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Originally Posted by KraneXL
A lot less critical on the rear, but still of concern. Tires are your only contact with the road so I take no chances.
Agree, especially at $30 a tire. And those can be found for about $30.
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Old 08-30-18, 07:20 PM
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Second the shoe -goo recommendation if your concerned, it offers a certain piece of mind. I have gashed a few tires and this has saved them or at least let me be comfortable using them for another thousand miles plus. Cheap insurance for such a piece of mind in my opinion.
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Old 08-30-18, 07:40 PM
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shoe goo makes it less likely that you will pick up a little bit of something sharp in that cut, which could then work its way through the tire structure.
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Old 08-30-18, 07:59 PM
  #20  
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I end up with too many rear tires.
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Old 08-31-18, 08:47 AM
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Originally Posted by pattrick
Second the shoe -goo recommendation if your concerned, it offers a certain piece of mind. I have gashed a few tires and this has saved them or at least let me be comfortable using them for another thousand miles plus. Cheap insurance for such a piece of mind in my opinion.

Yep, I took about a BB size chunk out of a brand new one last year. Didn't know it at the time and actually descending for miles on it in the 40 mph range. Tire held up fine. I just built up a few layers of shoe goo to fill the hole and then put that tire on my Serotta. I've now got around 500 more miles on it with no issues so far It's a even simpler fix with a cut like that.
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Old 08-31-18, 09:19 AM
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Thanks for all the great responses folks. I will follow the shoe goo advice as a precaution.
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Old 08-31-18, 10:31 AM
  #23  
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Originally Posted by MikeyMK
The structure of your tyre is not made of rubber. At all. Rubber is only a coating.

if the cut is only the rubber then you have nothing to worry about. If it is the woven material underneath then you find yourself at my next point..

Worry. It's harmful. Eliminate its source.
Do you need to do something about a problem? If so, do it. If not, there's no need worrying about it.
That's what I think too. My test is to replace the inner tube (if necessary) and to inflate the tire to operating pressure. If you can feel a bump in the area of the cut then the tire's casing has been damaged and the tire is a goner. If it feels smooth like the rest of the tire, you're good-to-go.

I've been following that principle for decades and I'm still alive to type this so it's obviously working for me.
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Old 08-31-18, 10:31 AM
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If you are concerned enough to post about it then you should be concerned enough to replace it.
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Old 10-05-18, 12:28 PM
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Originally Posted by TimothyH
If you are concerned enough to post about it then you should be concerned enough to replace it.
Sometimes people jump on Bike Forums to get extra advice before making big purchases or drastic measures – or maybe they just don't know enough.
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