Tyre damage - cause? - SV650.org

Grant66 · 14-07-13, 12:18 PM

http://i21.photobucket.com/albums/b2...ps7dcdf38e.jpg

What could have caused this? Is it use damage or a fault in the tyre? Is it dangerous?

DJ123 · 14-07-13, 03:34 PM

looks like something has caught the sidewall and taken a chunk of rubber out

14-07-13, 10:40 PM

Total guess, possibly wouldnt affect a motorbike tyre but maybe a big pothole and the side wall has been pinched by the rim? no idea tho, just a punt

NTECUK · 15-07-13, 09:05 AM

I wouldn't feel confident using it.

15-07-13, 09:08 AM

Yes, and not repairable, needs replacing-----a front wheel blow out is not a nice occurrence.
As you have managed to take a chunk out of the tyre and split the carcase there is most likely damage to the inner tyre wall structure.
MOT failure and a nick for a defective tyre if stopped.
Down to you if you continue to use it or not.

Sid Squid · 15-07-13, 09:09 AM

Can't imagine what caused that - but that's damage, not a fault.

NTECUK · 15-07-13, 09:14 AM

Pot holes or kerb bumping.

15-07-13, 12:40 PM

There doesn't appear to be any damage to the wheel, which I would expect from a curb/pothole encounter that would strip off a chunk of rubber. This chunk appears to have been ripped off from the wheel side out.
But, there's a lot of pitted and eroded looking areas nearby that are not normal and certainly not the result of abrasion or impact.
I suspect a manufacturing defect, some contaminant in the rubber before they laid it up.

15-07-13, 12:48 PM

Pure speculation on my part, but could it be that the impact site was at the deep looking cut on the right hand side and the damage to the carcass caused the larger area of damage? Don't think there would be any way to tell without taking off the tyre.

Grant66 · 15-07-13, 01:57 PM

My thoughts were that it didn't look like something caused by a pot hole (no rim damage at all) going to get it changed and have them send it back to Avon for assessment. The mark next to the missing rubber is about 0.5 mm deep and could be the caused by a pot hole

14-07-13, 12:18 PM	#1
Grant66 Member Join Date: Nov 2007 Location: Preston Posts: 656	Tyre damage - cause? http://i21.photobucket.com/albums/b2...ps7dcdf38e.jpg What could have caused this? Is it use damage or a fault in the tyre? Is it dangerous? __________________ Formerly known as Gajjii Previous Bikes: Red Sk1 Curvy, Red MT-07. Current Bike: Black MT-09.

14-07-13, 03:34 PM	#2
DJ123 Member Mega Poster Join Date: Jul 2011 Location: Somewhere over there Posts: 3,245	Re: Tyre damage looks like something has caught the sidewall and taken a chunk of rubber out __________________ BMW F800ST

14-07-13, 10:40 PM	#3
stuR Guest Posts: n/a	Re: Tyre damage - cause? Total guess, possibly wouldnt affect a motorbike tyre but maybe a big pothole and the side wall has been pinched by the rim? no idea tho, just a punt

15-07-13, 09:05 AM	#4
NTECUK Member Mega Poster Join Date: Apr 2011 Location: essex Posts: 5,314	Re: Tyre damage - cause? I wouldn't feel confident using it. __________________ Raisin cookies that look like chocolate chip cookies are the reason I have trust issues.

15-07-13, 09:08 AM	#5
Dicky Ticker Guest Posts: n/a	Re: Tyre damage - cause? Yes, and not repairable, needs replacing-----a front wheel blow out is not a nice occurrence. As you have managed to take a chunk out of the tyre and split the carcase there is most likely damage to the inner tyre wall structure. MOT failure and a nick for a defective tyre if stopped. Down to you if you continue to use it or not.

15-07-13, 09:09 AM	#6
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Tyre damage - cause? Can't imagine what caused that - but that's damage, not a fault. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

15-07-13, 09:14 AM	#7
NTECUK Member Mega Poster Join Date: Apr 2011 Location: essex Posts: 5,314	Re: Tyre damage - cause? Pot holes or kerb bumping. __________________ Raisin cookies that look like chocolate chip cookies are the reason I have trust issues.

15-07-13, 12:40 PM	#8
wideguy Guest Posts: n/a	Re: Tyre damage - cause? There doesn't appear to be any damage to the wheel, which I would expect from a curb/pothole encounter that would strip off a chunk of rubber. This chunk appears to have been ripped off from the wheel side out. But, there's a lot of pitted and eroded looking areas nearby that are not normal and certainly not the result of abrasion or impact. I suspect a manufacturing defect, some contaminant in the rubber before they laid it up. Last edited by wideguy; 15-07-13 at 12:41 PM.

15-07-13, 12:48 PM	#9
SvNewbie Guest Posts: n/a	Re: Tyre damage - cause? Pure speculation on my part, but could it be that the impact site was at the deep looking cut on the right hand side and the damage to the carcass caused the larger area of damage? Don't think there would be any way to tell without taking off the tyre.

15-07-13, 01:57 PM	#10
Grant66 Member Join Date: Nov 2007 Location: Preston Posts: 656	Re: Tyre damage - cause? My thoughts were that it didn't look like something caused by a pot hole (no rim damage at all) going to get it changed and have them send it back to Avon for assessment. The mark next to the missing rubber is about 0.5 mm deep and could be the caused by a pot hole __________________ Formerly known as Gajjii Previous Bikes: Red Sk1 Curvy, Red MT-07. Current Bike: Black MT-09.

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