Is this Tyre for the bin?

Unknown Soldier

OK.

I've had more than a couple of dozen punctures over the last 23 months.. so I know what all sorts of punctures look like...

After a rear puncture last week I decided to check the front "non" punctured tyre for glass etc.

I came across the following..



Is that a result of glass? I've never seen something like that before? Is it going to lead to the sidewall failing?

Would glass or "something" have "cut" the tyre like that?

I've never had a puncture with it, so far...

Should I just ditch the tyre and put on a new one?

Or would it be OK to use?

Is it possibly a warranty/manufactures issue? I remember seeing a thread here before?

Alek

This tyre has been cut, most likely by glass. Will not be covered by warranty.

If the picture shows the tyre being properly inflated, the inner casing is intact and the tyre is perfectly safe to ride.

Unknown Soldier

Alek wrote: »

This tyre has been cut, most likely by glass. Will not be covered by warranty.

If the picture shows the tyre being properly inflated, the inner casing is intact and the tyre is perfectly safe to ride.

Thanks, Alek.

kumate_champ07

doesnt like its been used much, gp4000s?

it looks perfectly safe to me

Wishbone Ash

Did you remove the tyre from the wheel and check the inside? If there's no sign of anything amiss on the inside, ride on.

I doubt it was caused by glass. I'd say more likely done from striking a piece of metal debris or sharp stone. I've destroyed several tyres in a similar fashion but with much deeper cuts resulting in instant blowouts (usually after dark when visibility is reduced).

(PS - I bought a pair of GP4000's based on raving reviews here. I punctured on every ride I used them on including 4 in one ride alone. They're languishing in the attic now. I've no confidence at all in them).

Alek

I bought a pair of GP4000's based on raving reviews here. I punctured on every ride I used them on including 4 in one ride alone.

I bought myself a pair of GP4000S II in 28mm despite your experiences. With hesitation to be honest.

So far so good, no punctures or cuts - and I'm riding through some rough and glass-ridden city streets daily.

I guess your pair was simply jinxed WA.

TGD

If you decide to keep it perhaps put it on the back wheel

Alek

On the second thought, deflate the tyre and check if the threads inside the cut are damaged. If so, put it on the back wheel.

From experience though, once they are damaged, the cut spreads under pressure - and I cannot see this here.

iwillhtfu

I did similar recently only worse on a GP4000s

http://www.boards.ie/vbulletin/showthread.php?p=94947196

As others have said take the tyre off and check if the hole/crack has gone right through.

Mine was removed and put on the turbo for a bit but the clean up after using it wasn't worth the effort it literally shed rubber everywhere. I did open up the split and put a bit of glue on it which seemed to do a grand job of holding surprisingly.

Is it your front of rear tyre? At the very least I'd be swapping it out for the rear as a blow out on the rear won't be as noticeable as on the front.

makker

Anyone know if this tyre is ok please or is this normal?

Less than a month old (Michelin pro 4), no nicks or cuts, just fraying a bit on the side wall, also in more than one spot, probably in 4 spots like the attached

CramCycle

Wishbone Ash wrote: »

(PS - I bought a pair of GP4000's based on raving reviews here. I punctured on every ride I used them on including 4 in one ride alone. They're languishing in the attic now. I've no confidence at all in them).

Does it seem like a tyre fault? I would return them if so. I love them as a tyre but had one that went on the first ride and returned them and got a new one in exchange, no questions asked.