[Closed] repairing a biggish cut in a tyre - suggestions needed

I've only ever fixed cuts like that on sidewalls, not on the actual tread.

I would go with super gluing and maybe stitching the cut*, and then gluing a patch on the inside (chunk of inner tube and vulcanising rubber solution).

* The tricky bit is not exposing the stitches to wear on the outside

You'll probably feel it when riding though

thats a big one, you are going to need a thick patch behind that and lots of super glue.
can you patch it - yes. is it worth it, humm not really. it will be lumpy, and could fail again. always harder to keep a repair going in the tread than in the side wall.

thanks. so what would a patch be made from? inner tube would be too stretchy I guess, what about an old bit of tyre carcass - I've got an old road tyre I could use? Is there not some kind of rubber glue that would meld the tyre and patch together rather than using super glue which is brittle?

vucanizing solution

Throw it away and buy a new tyre.
Maybe fix it - as a get you home repair only, otherwise one for the recycling section.
35mph down a fast descent and it blows out - just not worth the risk. Always a 'sickner' to slash a good tyre - but it just happens. I'd rather [url= http://www.nextdaytyres.co.uk/details.aspx/MAXXIS-HIGH-ROLLER-MTB-26/9/44 ]spend £22[/url] than have a future trip to the local A&E and weeks off work.

could you just not buy a tyre boot? Park do them. Like their self adhesive patches but biger thicker and stronger.

Wow! I've never seen a longitudinal slash like that before!

I've repaired sidewall tears with a piece of latex glued down with vulcanizing solution, reinforced with some gaffer tape superglued in places.

Perhaps you could clean the inside of the carcass with some ISP and glue down some reinforced tape eg gaffer tape so that the actual ply beneath the tread is supported and reinforced? Then stitch with either a sturdy fishing line or dental floss.

I'd rather not spend money on the repair as by the time I've bought a tyre boot (£5), some new glue (£3-4), etc. I'll be half way to a new tyre.

thing is, if I bought a new tyre I wouldn't get another high roller as I've gone off them for XC stuff. this is a for my spare bike so I may as well buy a new tyre for my first bike and relegate the old tyre to this bike.

Wow! I've never seen a longitudinal slash like that before!

it was from a flinty type rock stuck in mud at the bottom of a compression that I jumped into.

thanks PJM, I might give the gaffer tape and dental floss thing a whirl - or I might have some even stronger tape. then pressure test it.

I put it on a wheel last night, forgetting that it had a slash in it, then got it to about 30psi before it went BANG! ooops.

any more ideas from the evening crowd before I have a go?

Gorilla tape

I had a similar gash on a sidewall of a nearly new Rubber Queen from some barbed wire. I superglued it, stitched it with dental floss and then put a large patch on the inside and a 2 pack flexible Araldite over the stitching.

I run tubeless and took it off after a while as I was worried it would give up the ghost on a remote moorland trail at the furthest point from the car.

Had some success using dental floss to stitch side walks but no way if bother to repair that.

i'd just bin it. will never be the same

I would bin it too,and Im a Yorkshireman 😯

bin it.

I would bin it too, and Im a Yorkshireman

obviously not a true one like me 🙂

if I didn't need a new pair of tyres for the commuter, a pair for the road bike and hadn't just spent more than I wanted to building up a spare MTB I'd bin it... (good) tyres ain't cheap.

I'd bin it. Not worth repairing it I'm afraid.