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  # 1325182 15-Jun-2015 16:24
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johnr: Side wall damage is only an issue if steel belt is damaged if not then you are throwing money away, The strength is in the steel belt not the rubber


I reckon it does have some function... probably to protect the steel belts from kerb damage. Otherwise, why do they waste rubber by putting it on there? Seems to me that tyres could be cheaper and lighter if they didn't have rubber on the sides.



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  # 1325191 15-Jun-2015 16:33
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frankv:
johnr: Side wall damage is only an issue if steel belt is damaged if not then you are throwing money away, The strength is in the steel belt not the rubber


I reckon it does have some function... probably to protect the steel belts from kerb damage. Otherwise, why do they waste rubber by putting it on there? Seems to me that tyres could be cheaper and lighter if they didn't have rubber on the sides.




It helps make the tyre more resistant to puncturing, and the steel belts help increase the strength of the tyre,  Having just rubber or just steel would leave you with a much worse tyre.




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  # 1325203 15-Jun-2015 16:47
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I'm finding it hard just to find any official guide lines on the safety of the tyres.





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  # 1325205 15-Jun-2015 16:49
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jimbob79: I'm finding it hard just to find any official guide lines on the safety of the tyres.


Here you go.
https://vehicleinspection.nzta.govt.nz/virms/in-service-wof-and-cof/general/tyres,-wheels-and-hubs/tyres-and-wheels

 

Tyres (excluding spare tyres)

 

12. A tyre shows damage that is likely to compromise its ability to operate in a safe manner or lead to premature tyre failure, such as:

 

a) a lump or bulge that is likely to be caused by separation or partial failure of the tyre structure, or

 

b) a cut or crack in a sidewall or tread more than 25mm long that reaches the cords, or

 

c) exposed or cut cords, or

 

d) the tread of a retreaded tyre shows signs of separation, or

 

e) nails or other sharp objects embedded in the tyre, or

 

f) significant perishing, eg due to age, moisture or exposure.

 






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  # 1325207 15-Jun-2015 16:52
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Some of you have the wrong idea of where the steel belt is. The steel is under the tread to stabilise it. The sidewall plys will be textile.

The WoF requirements are no cut cords or no cracks or cuts reaching the cords longer yhan 25mm.

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  # 1325214 15-Jun-2015 17:22
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pdath:
frankv:
johnr: Side wall damage is only an issue if steel belt is damaged if not then you are throwing money away, The strength is in the steel belt not the rubber


I reckon it does have some function... probably to protect the steel belts from kerb damage. Otherwise, why do they waste rubber by putting it on there? Seems to me that tyres could be cheaper and lighter if they didn't have rubber on the sides.




It helps make the tyre more resistant to puncturing, and the steel belts help increase the strength of the tyre,  Having just rubber or just steel would leave you with a much worse tyre.


The cut is on the side wall difficult to run over nails and get a puncture,

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  # 1325228 15-Jun-2015 18:02
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johnr: The cut is on the side wall difficult to run over nails and get a puncture,


difficult not impossible

ive seen plenty of tires with damage to the side wall from nails and other things

IMO get it fixed, nothing more annoying than a puncture while your out, or if it blows out and you cause an accident

 
 
 
 


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  # 1325229 15-Jun-2015 18:06
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Myself, I'd get it checked out at a tyre shop asap.

If the sidewall of the tire is damaged, the tyre could blowout at speed..and I doubt that would be much fun

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  # 1325234 15-Jun-2015 18:22
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It all depends on where you go to get your WOF if at VTNZ it wouldn't pass some shonky garage it probably would 

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  # 1325237 15-Jun-2015 18:32
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Tyres are a vital safety component personally I would not take the risk. I replace tyres that get damage like this immediately.




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  # 1325240 15-Jun-2015 18:40
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WyleECoyoteNZ: Myself, I'd get it checked out at a tyre shop asap.

If the sidewall of the tire is damaged, the tyre could blowout at speed..and I doubt that would be much fun


They have a vested interest in selling you a new tyre so not usually impartial. A WOF place should be independent and should be qualified to test for this sort of thing. From the photo, I would be surprised if it will pass a WOF, as it looks damaged to a certain extent, and I doubt it can be repaired.

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  # 1325245 15-Jun-2015 18:53
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pretty sure you cant repair the sidewalls of a tyre

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  # 1325258 15-Jun-2015 19:10
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Jase2985: pretty sure you cant repair the sidewalls of a tyre


Correct, any damage to side wall is NOT repairable.






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  # 1325265 15-Jun-2015 19:16
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Even tread apparently can't be repaired in some cases. I have some glass on the road puncture my tyre, and was told by the tyre repair people that due to the shape of the cut, it couldn't be repaired, and that was $200 odd for a new tyre to match the others..

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  # 1325297 15-Jun-2015 20:08
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jonathan18: Something similar happened to me the other week - and I discovered it a couple of days before my WOF was due. I called into the only store that stocks the current tyre on the car, and they checked it out and said it would be fine and would pass the WOF without issue. In my case, only rubber was visible under the 'gash', so you may face a different outcome. But I'd totally recommend just calling into a tyre place to have them check it out - but perhaps one that you trust, rather than one of those that appear to do anything to increase the chance of a sale...

And, yes, my car passed the WOF without issue, which I was damn glad about given I got a quote for new tyres at the same time: $1600 (or thereabouts) for four tyres (at that point they were doing 4 for the price of three, so the full price was something like $500 each!).



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