I have a small cut - about 1cm long - down the middle of my otherwise new GP4000s 700x25s.

Problem is, this cut has gone all the way through the tire, and the metallic lining (kevlar? something else?) in the tire is partially exposed and the inner surface of the tire around the cut is a little rough. I wouldnt trust a tube to stay against it and not flat - although I dont know how long I've had this cut without any flats so far.

Any ideas if gluing the hole shut and perhaps sanding the inner side would work - if so, suggestions for what type of glue to use?

Yeah, I know it is probably easier to just toss it and get a new one, but I have minor OCD about trying to reduce my environmental footprint - I dont use CO2 and I dont want to toss an otherwise fairly new tire.

Thanks!

Difficult without a photo.
Duct tape on the inside, super glue on the outside.
Use it on your rear wheel.

a strong patch on the inside should keep the tube from getting a hernia.

Dont have my proper camera rig with me here, and the little compact I have doesnt really show the problem.

Your solution seems like a good option, will try patching it and adding duct tape. Suspenders and belt. What I wasnt sure about was what type of glue to use to seal the cut - if regular superglue does the trick, I'm set.

You can use a tube patch.
I had some of these.


Cut:


SuperGlued:

I like this solution. I think Shoe Goo works better than super glue though.

I use Shoe Goo (Black) on my cut tires, as it is more flexible/malleable and dries in a less hardened way than super glue.

I'd stay close to home with that cut tire. If you want to enjoy riding without the worry of a problem I'd say replace the tire. I'd never be comfortable with it.

No Problem.
Roy here, road 9,000 miles after patching this one.
He had 17 inside patches and duct tape before he trashed it.

How do you ride 9000 miles on a bike tire and have any rubber left on it at all?

J.

130lb rider no hills and major wheelsucking.

Wow, For personal safety I say chuck it or use it on a trainer in the winter time. I cannot fathom riding downhill on a bike tire with a known 1cm cut. Yes I know those Conti 4000's are expensive but 1cm is huge ( not a pinhole).

I'd save it for your trainer. If you want to reduce your footprint, do something serious: public transportation instead of driving, turn down your thermostat in the winter, no A/C in the summer, live in a multi-unit apartment rather than a single family home, etc.

^^ My trying to reduce my eco-footprint isnt just limited to extending the life of my tires, actually

But yeah, I think I'll put this on the trainer and get another front wheel. Not worth chancing it, I suppose.

I would use 10wheels method and ride it on the back.

Why on the back, btw? All the punctures I've had so far have been back wheel punctures.

A front tire failure can be much more dangerous than a rear flat. Control of the bike is almost always at stake when the front wheel fails mid-ride, not as much control issue with the rear.