Is this the end?

[ChrisV]

Tyres have done about 200 miles. Were on bike when I got it.

 

[S-Express]

Not necessarily - depends how deep the cut is and whether the casing is still intact.

 

[cosmicbike]

Not necessarily - depends how deep the cut is and whether the casing is still intact.

This^^
If the cut runs right the way through to the inside then I'd likely bin it. Had the same on a GP4000 after similar miles and decided for a few quid I'd buy a new one, after all they are your only contact with the ground..

 

[gbb]

One consideration is how far away from home you ride if you do decide to repair it.
I've successfully ridden a gator with a similar gash, similar as yours when it was quite new. Get (if you can) a strip of emery tape and insert it, abrasive side to the tyre, between the tube and tyre. I rode mine for a whole year like that, although you do have to replace the emery tape now and then.

Proper strips are available I'm sure...but it did used to occur to me, I do think want a permanent failure 30 miles from home...although it never did.

 

[User6179]

I don't think Grandsports have puncture protection built in so I would say it is knackered.

 

[S-Express]

I don't think Grandsports have puncture protection built in so I would say it is knackered.

"A supple 180 tpi casing for great rolling, handling and grip with new NyTech breaker technology to offer good puncture resistance, and all at a great price."

 

[User32269]

If it's used for leisurely commutes or short rides, a bodge between tyre and tube could keep you rolling for many a mile.
If it's used for much harder riding, I would ask myself how confident I would feel bombing down a long 20% descent? Personally, it would worry me.

 

[User6179]

I might give these a try then , was always put off by the lack of protection before .
If the cut is not through the puncture belt then I would keep using it , I would stick it on the back wheel if its on the front now.

 

[gbb]

I might give these a try then , was always put off by the lack of protection before .
If the cut is not through the puncture belt then I would keep using it , I would stick it on the back wheel if its on the front now.

As an example, my gator was cut right through, if I inflated the tube well, it would soon come through and of course puncture again. Emery tape for instance is cloth based, very strong and resists that tube working through...for a reasonable while anyway.

 

[keithmac]

You've got to weigh up what your time's worth.

Personally I'd fit a new tyre for what it costs.

 

[dan_bo]

Oh look! a shagged Conti. Who'd have thought it?

 

[mrandmrspoves]

I would apply a small amount of Stormsure (glue used by divers on their wetsuits) and maybe something on the inside of the casing if the hole goes all the way through, then I would keep riding it. (Except I wouldn't be using it in the first place because I always use Schwalbe Marathons!)

 

[ChrisV]

Just going to buy a new one then. It's not for commuting so is a Schwalbe One a good tyre?

 

[mrandmrspoves]

If you ask for advice on a cycling forum you will get lots of contradictory advice.
Some swear by Continental tyres such as their 4 seasons. I am not a speed merchant and am happy with the Marathons - but some people hate them and claim they have lots of rolling resistance. I have not used the Schwalbe One tyres - but all the reviews rate them very highly.

 

[ChrisV]

I had Marathon Pluses and they were heavy. Continental GP or whatever they're called look good, as do Schwalbe Ones.