Is this tyre write off?
Discussion
Locknut said:
At the risk of incurring the wrath of those on the high moral ground (there are a few here)are we sure that fault can not be repaired? It is a runflat tyre so the sidewalls are stiffer, therefore the shoulders do not flex as much. If this case involved a conventional tyre I would agree that the flexing of the shoulder would render a repair unsafe, but here we have a stiff shoulder. Furthermore the "no repair" recommendation is based on tyres that have been driven while flat but that is not the case here.
Check the British Standards for tyre repair. They didn't make it up just to piss people off.Locknut said:
At the risk of incurring the wrath of those on the high moral ground (there are a few here)are we sure that fault can not be repaired? It is a runflat tyre so the sidewalls are stiffer, therefore the shoulders do not flex as much. If this case involved a conventional tyre I would agree that the flexing of the shoulder would render a repair unsafe, but here we have a stiff shoulder. Furthermore the "no repair" recommendation is based on tyres that have been driven while flat but that is not the case here.
Here's the link I posted earlier to the British Standards PDF showing the area which can be repaired and the areas which cannot, legally.NB, if you mean 'moral high ground' then say so. It's always best to be accurate in your accusations, even if the accusation itself is wide of the mark.
Personally I don't think, in this case, that advising against an illegal repair to something as vital and potentially lethal if it fails as a tyre has anything to do with taking the moral high ground and everything to do with that sadly lacking commodity, common sense. YMMV, of course.
There is a slight possibility that a run flat tyre may be safely repairable outside of the remit of the linked to document, but the BTMA does not appear to publish the same kind of document specifically for them, oddly.
That said, I don't think I would risk a tyre with the damage shown in the picture as the integrity of the sidewall in a run flat is surely even more important than in a 'normal' tyre, wouldn't you say?
Anyway, I'm not trying to win an argument, merely offering an opinion based on at least a little research rather than rumour, anecdotal 'evidence' and hearsay. As the OP has already written off the tyre, the point is now moot.
@Pothole: you use the word "accusation" so I must assure you that my post was not an attack on you. I might have been going a little off-topic but I simply wondered if the rules are the same for runflat tyres because of their different construction. Without any prompting you state "the BTMA does not appear to publish the same kind of document specifically for them" which is good reason to wonder about the matter.
Thank you for pointing out that I has transposed the words "high" and "moral", I sometimes have difficulty with the English as she is spoke.
Thank you for pointing out that I has transposed the words "high" and "moral", I sometimes have difficulty with the English as she is spoke.
The sidewall of a tyre is very fragile. I wouldn't repair a cut that big if it was in the middle of the tyre, it compromises the integrity of the tyre, a tyre can only be damaged so much before it becomes unsafe. Damage to the sidewall causes more damage than damage to the tread. If you have damage on your sidewall, and it expands, it will make a huge rip (called a zipper rupture in the tyre industry), It can also form bulges in your tyre, which are dangerous because of the increased risk of tread separation and zipper ruptures, + they make the tyre out of round. Driving on any flat tyre will destroy the sidewall almost immediately, on a normal tyre, it will shred the inside of the tyre and the tech repairing the tyre will be able to know it is not repairable. A runflat has the same problem, only it doesn't always shred the inside, so a tech can't really determine if the tyre is repairable or not. I hope this helps.
Locknut said:
@Pothole: you use the word "accusation" so I must assure you that my post was not an attack on you. I might have been going a little off-topic but I simply wondered if the rules are the same for runflat tyres because of their different construction. Without any prompting you state "the BTMA does not appear to publish the same kind of document specifically for them" which is good reason to wonder about the matter.
Thank you for pointing out that I has transposed the words "high" and "moral", I sometimes have difficulty with the English as she is spoke.
HTH, although this is English as she is writ, of course!Thank you for pointing out that I has transposed the words "high" and "moral", I sometimes have difficulty with the English as she is spoke.
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