View Full Version : Tyre damage advice.
Pricey12
13-02-13, 12:52 PM
Sorry for yet another newbie question :( I discovered this gouge in my rear tyre today and wanted some advice on whether the tyre is ok or will need replacing. Looks like it was caused by some glass or similar. Seems to be about 2mm deep or so. The tyre is a Pirelli diablo strada. Thanks guys.
Ooooooh. Tbh I'm sure it looks worse than it is. If it hasn't penetrated the carcas, it might not be optimal for 'unruly behaviour' but, it might be fine for normal riding. However, the best advice is to check with a tyre person. Ok, granted some might try to sell you a tyre and tell you ballcocks but if you smell BS just walk away. Can't really give you an accurate assessment based on these pics.
On the other hand, I'm out and about on Friday ... (check rideout thread :))
--> --> http://www.totalmotorcycle.com/maintenance/tires-tyres.htm
Pricey12
13-02-13, 02:00 PM
it wouldn't bother me if it was only on the tread, just a bit concerned as it is between the tread too. I'm having my new chain fitted at GP's on Friday so will ask them to have a look at it. May be out and about afterwards though :p
If You cant see the reinforcing cords its Ok for sensible stuff
it wouldn't bother me if it was only on the tread, just a bit concerned as it is between the tread too. I'm having my new chain fitted at GP's on Friday so will ask them to have a look at it. May be out and about afterwards though :p
Sweet, i'll be in the area doing some filming and set up on the bike so PM us on here on the day if you fancy a ride.
Fallout
13-02-13, 07:45 PM
The only problem with taking it to a garage is they'll tell you it's fecked to a) cover their arses and b) sell you a tyre. Best to get impartial advise from someone knowledgable away from a garage.
My gut tells me that's not as bad as it looks, but if it was me I'd also be concerned. Defo get advise from someone who knows tyres.
SvNewbie
13-02-13, 08:09 PM
The other people here are probably right, the damage is probably not as severe as it looks. Looking at it a second time I realised part of what looked dodgy is actually just the flashing from the mold.
But with that bit of rubber being the only thing keeping my backside from hitting the ground I'd be inclined to replace it. I think you'll struggle to find anyone in the trade who'd tell you it was fine, and if they did they would certainly not give you that in writing. I'd at least resolve to change it at the first opportunity.
Pricey12
14-02-13, 02:15 PM
Thanks for all the advice guys.
I popped it in to GP Motorcycles today and fair play to them they didn't try and hard sell me a tyre. In fact they practically had to talk me out of buying one :rolleyes: They said the tyre has got at least another thousand miles or so left in it tread wise, so rather than buy a new one they can just fit an inner tube to it to give me piece of mind. Result :cool:
yorkie_chris
14-02-13, 02:24 PM
Generally if you can see cords then chuck it.
If not, keep your eye on it.
Thanks for all the advice guys.
Ithey can just fit an inner tube to it to give me piece of mind. Result :cool:
No they can't
You will find that lots of people will advise against this, because the tubeless tyre is stiffer, and has ribs inside, with the result that it chafes the inner tube and it may burst.
They also say that air trapped between the tyre and the tube can't get out and may cause it to burst.
They even say the well on a tubeless wheel is different and will leave a gap that may cause the tyre to burst.
http://www.ridesafebacksafe.co.uk/images/Motorcycle%2012pp%20download.pdf
and this is the standard that slow cars have ,they have 4 chances you dont
http://www.btmauk.com/data/files/Minor_repairs_to_passenger_car_and_light_van_tyres _31_May_2011.pdf
Pricey12
14-02-13, 02:33 PM
No they can't
You will find that lots of people will advise against this, because the tubeless tyre is stiffer, and has ribs inside, with the result that it chafes the inner tube and it may burst.
They also say that air trapped between the tyre and the tube can't get out and may cause it to burst.
They even say the well on a tubeless wheel is different and will leave a gap that may cause the tyre to burst.
http://www.ridesafebacksafe.co.uk/images/Motorcycle%2012pp%20download.pdf
and this is the standard that slow cars have ,they have 4 chances you dont
http://www.btmauk.com/data/files/Minor_repairs_to_passenger_car_and_light_van_tyres _31_May_2011.pdf
Surely the garage wouldn't have suggested it if it was dangerous though?
Now I have a dilemma, shell out for a new tyre, risk leaving it as it is or have an inner tube fitted.
If the reinforcing cords are not showing ,then its fine.
"Leve well allone".
On a plus note If it lets go with the tube fitted you can sue them and they can get 6 months prision.
For what it's worth we all run tubeless tyres with tubes on our supermotos as we have spoked wheels and you don't get many slick or sticky tubed 17" tyres. Anyway, never heard of anyone having any issues whatsoever, be it track or road.
Fallout
14-02-13, 02:45 PM
I'd be inclined to leave it. They've said it's probably ok. It's not going to burst through usage. The worst case scenario is a thorn/nail that otherwise wouldn't have gone through punctures it through that gap, and then you just have a puncture. Ok, there probably are worse case scenarios but they could happen to a perfectly good tyre.
My pilot power RC2s are like cheese. Already been punctures once and whenever I ride over gravel they get torn to pieces. I have a hole at least 5mm deep next to a puncture repair. When I got that puncture I rode around on a steadily deflating tyre which was at almost atmospheric pressure by the time I got home and realised (though I could tell something was fishy so slowed down). Unless it's a blow out slow punctures on the rear aren't all that bad.
yorkie_chris
14-02-13, 03:03 PM
No they can't
You will find that lots of people will advise against this, because the tubeless tyre is stiffer, and has ribs inside, with the result that it chafes the inner tube and it may burst.
They also say that air trapped between the tyre and the tube can't get out and may cause it to burst.
They even say the well on a tubeless wheel is different and will leave a gap that may cause the tyre to burst.
http://www.ridesafebacksafe.co.uk/images/Motorcycle%2012pp%20download.pdf
and this is the standard that slow cars have ,they have 4 chances you dont
http://www.btmauk.com/data/files/Minor_repairs_to_passenger_car_and_light_van_tyres _31_May_2011.pdf
If the tube burst, you'd still have a tubeless tyre.
If the air between tube and tyre can burst the tyre I would love to know how.
Tube burst the valve will fall out . rapid deflation .
not fun.
its more the air allows the tyre and tube to move stressing the valve.
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