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twistedlemon
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PostPosted: 14:29 - 09 Feb 2013    Post subject: Motorcycle Tyres Reply with quote

Recently I had a puncture on my rear tyre (180/55 Dunlop Sports type tyre).

I have been worried ever since of getting a puncture. The road outside my girlfriend's place is really bad, in a farm type area where a lot of small stones are washed onto the road with flooding.

Well I got home last night after visiting her place, and on my brand new Michelin I can already see lots of cuts and small piercings in the tyre. Even pulled a few sharp stones out. There's a bad hole but no puncture. The front one also has a few cuts etc.

Can I keep riding on it with that hole? There's no loss in tyre pressure and the tyre is still sound. Just worried about it bursting or something when I'm at speed! Biggest fear!

Look forward to hearing the respected opinions of yourselves!

Graeme
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Ja7
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PostPosted: 14:40 - 09 Feb 2013    Post subject: Reply with quote

You will be fine !
It is a bummer getting a puncture, even worst when it can't be fixed, your more likely to get a puncture when it's wet, roll on summer
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yaigi
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PostPosted: 15:06 - 09 Feb 2013    Post subject: Re: Motorcycle Tyres Reply with quote

twistedlemon wrote:

The road outside my girlfriend's place is really bad, in a farm type area where a lot of small stones are washed onto the road with flooding.


I live on the exact same kind of road, it's a pain in the arse, if its not the stones in the road it's the mud dragged out the fields by the tractors Mad

How deep is the hole? Deeper than your tread? I would imagine if it's not deeper than the tread then it wouldn't be much to worry about.
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twistedlemon
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PostPosted: 18:32 - 09 Feb 2013    Post subject: Reply with quote

Alright gents, thanks for your replies!

The hole isn't deeper than the tread that I can see, but the funny thing is I had a puncture literally a week ago today and already my new tyres are in that state! I will try and post a pic!

The tyres are both still rock solid and inflated, I'm just scared that if another stone hits that weak spot that it goes BOOM on the motorway and I get wrapped underneath a trucks wheels, even worse if my bike causes a further accident *shivers* it's not even worth thinking about - that's why I want to make sure it won't happen at all! Apparently it's illegal to repair tyres now as well, because they are at a higher risk of blow outs.

I commute on my bike all year round, I hate using cars - they're big they're clunky and they're a pain in the a***.
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Wonko The Sane
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PostPosted: 19:28 - 09 Feb 2013    Post subject: Reply with quote

A friend of mine had a blow out on her little 125's front wheel at about 40mph, she was fine if a little shaken by it.

she held the bars straight and coasted it to a stop with a bit of help from the back brake.

As such, I don't think a blow out is going to launch you sideways under a truck, the probability is pretty low.
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twistedlemon
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PostPosted: 19:32 - 09 Feb 2013    Post subject: Reply with quote

Black Sheep wrote:
A friend of mine had a blow out on her little 125's front wheel at about 40mph, she was fine if a little shaken by it.

she held the bars straight and coasted it to a stop with a bit of help from the back brake.

As such, I don't think a blow out is going to launch you sideways under a truck, the probability is pretty low.


You're probably right mate, I just have a vivid imagination!

Also if I were to have a blow out it would be at the maximum road legal speed of course *cough*
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Wonko The Sane
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PostPosted: 20:12 - 09 Feb 2013    Post subject: Reply with quote

I can understand your worry,

lived in a block of flats with a shared drive and courtyard, the block was a 70's build with the ground floor all garages and lots of car parking around, after some workmen had been doing something in the grounds I came down to my bike to find it wouldn't roll when pushed, looked down and my back tyre was flat.

had a screw through it

had it patched repaired which I was assured would be fine, but was made aware that my tyres had a fair bit of millage left in them but would need replacing at some point in a month or so depending on use.

The number of times I checked my rear tyre when out on a ride because the bike felt a bit funny due to the road surface was getting a bit silly!
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yaigi
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PostPosted: 20:17 - 09 Feb 2013    Post subject: Reply with quote

twistedlemon wrote:
Apparently it's illegal to repair tyres now as well, because they are at a higher risk of blow outs.


Really? Where did you hear this? I think it depends on the location of the damage, for example I know damage to the sidewall of the tyre on cars is a no-go in terms of repair as this area needs to withstand loads. I would imagine there are very similar rules for bike tyres, although I'm not aware of what exactly they are - I'm sure someone on here will though.

Pics of the tyre would probably help Thumbs Up

I do understand your worry, but if it helps I could show you the state of my tyres Laughing
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twistedlemon
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PostPosted: 02:30 - 10 Feb 2013    Post subject: Reply with quote

Post pics of your tyres to ease my woes!!

I will take a pic tomorrow and post it, I'm probably being a bit melodramatic but that's just who I am! I'm sure this thread will help for the next guy like me who also worries!
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twistedlemon
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PostPosted: 02:31 - 10 Feb 2013    Post subject: Reply with quote

yaigi wrote:
twistedlemon wrote:
Apparently it's illegal to repair tyres now as well, because they are at a higher risk of blow outs.


Really? Where did you hear this?

Pics of the tyre would probably help Thumbs Up


When I went to the shop to buy a repair kit the guy said they don't sell them anymore because it's illegal. This is the UK though.
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P.
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PostPosted: 08:13 - 10 Feb 2013    Post subject: Reply with quote

Tyre repairs are legal, shop sound like wangs.

In the summer I get loads of stones and shit in my tyre, they are sticky sport ones though..
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BTTD
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PostPosted: 10:55 - 10 Feb 2013    Post subject: Reply with quote

##Paddy## wrote:
Tyre repairs are legal, shop sound like wangs.


100% agree.
Even sidewall punctures can be repaired, but it's far more complicated and time consuming so isn't economical on car or bike tyres, but truck tyre repair centres do them all the time.
"Centre tread" punctures are relatively easy to repair, but it's much more fun to sell you a new tyre, or just fob you off because they don't do puncture repair "cos it's illegal mate". Rolling Eyes
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twistedlemon
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PostPosted: 16:03 - 10 Feb 2013    Post subject: Reply with quote

Thorn wrote:
Two local garages told me it was illegal to fix punctures on tubeless tyres, and again illegal to fit a tube. I bought a tube and fitted it myself, job jobbed.


How do you fit a tube? What about these puncture avoidance substances like Slime etc?
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twistedlemon
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PostPosted: 16:04 - 10 Feb 2013    Post subject: Reply with quote

##Paddy## wrote:
Tyre repairs are legal, shop sound like wangs.

In the summer I get loads of stones and shit in my tyre, they are sticky sport ones though..


I'm an all year rider, so I need to find a way to counteract these bloody nuisances in the roads! lol
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P.
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PostPosted: 16:37 - 10 Feb 2013    Post subject: Reply with quote

I ride all year, have about 2 punctures per year Laughing
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twistedlemon
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PostPosted: 22:43 - 10 Feb 2013    Post subject: Reply with quote

Here's the front and back tyres... the one that got punctured was brand new as well! Freak occurence?
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twistedlemon
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PostPosted: 22:48 - 10 Feb 2013    Post subject: Reply with quote

Back tyre
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haroman666
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PostPosted: 00:14 - 11 Feb 2013    Post subject: Reply with quote

For it to be of any danger the stone would have to get down to the kevlar belts before the structural integrity is compromised. And for loss of pressure it would have to go through the most inner rubber layer that actually makes it air-tight.

Dont go sticking things in it to find how deep it is cause you could extend it.

It'll be fine Thumbs Up I've seen/had far worse.
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twistedlemon
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PostPosted: 00:25 - 11 Feb 2013    Post subject: Reply with quote

haroman666 wrote:
For it to be of any danger the stone would have to get down to the kevlar belts before the structural integrity is compromised. And for loss of pressure it would have to go through the most inner rubber layer that actually makes it air-tight.

Dont go sticking things in it to find how deep it is cause you could extend it.

It'll be fine Thumbs Up I've seen/had far worse.


Cheers mate Very Happy That's reassuring.

I used a pin to get the stone bits out but didn't prod to see how deep it was.
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joncwl
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PostPosted: 22:27 - 11 Feb 2013    Post subject: Reply with quote

Thorn wrote:
Two local garages told me it was illegal to fix punctures on tubeless tyres, and again illegal to fit a tube. I bought a tube and fitted it myself, job jobbed.


when i punctured my tubeless Tyre all i did was put some tyre weld in and 1 month later still fine my grandad uses them on his bike and his truck....dont see any problem xD
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Ja7
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PostPosted: 22:37 - 11 Feb 2013    Post subject: Reply with quote

By the look of it you could of got it repaired
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0l0dom0l0
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PostPosted: 01:18 - 12 Feb 2013    Post subject: Reply with quote

That's nothing, that'll be fine dw.

It'll wear out over time anwyays.
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Walloper
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PostPosted: 11:00 - 12 Feb 2013    Post subject: Reply with quote

Thorn wrote:
twistedlemon wrote:

How do you fit a tube? What about these puncture avoidance substances like Slime etc?


Cut off the original valve on the rim, fit the tube and pull the tube valve through. Ensure the tube has no kinks anywhere then fit the tubeless tyre on top.

It's pretty much considered taboo to do this with a tubeless tyre and the internet seems to be full of horror stories about how you'll die in a ball of fire if you try it, especially with tyres that have a ridged inner surface.

All I can say is it's worked fine for me over the last few thousand miles.


A tubeless tyre won't let air out as easily as a tubed tire.
Tubes let air out when punctured where as tubeless tyres will self seal to a degree. Tubeless tyre still have an inner tube but it is bonded to the inside surface of the tyre's carcass.

I wouldn't fit tubes to tubeless tyres not just because of the harm it will do to new born kittens but you add weight to the wheel and if you have a nail go in it will defo go flat quite soon. Where as a tubeless tyre may take weeks or days to deflate. (Which is why you should check tyre pressures everyday or at least very often. Kicking/Pressing means nothing you need to put a good gauge on the valve. It takes about 1 min. if OK or five minutes if you need air and have a compressor handy.
Motorbike tyres are made of softer compound than car tyres so seem to pick up all sorts of sharp debris as you ride.
Picking the bits out is as much as you can do to help. If you leave it in then it can be driven into the tyre as it wears/works.
Ask your girlfriend to put a layer of 1/4" pea gravel on top of the drive. If she 'really' loves/respects you it won't be a problem for her. Smile
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