Cut Tyres

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Cam
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Re: Cut Tyres

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Jonnycraig wrote:Ferrari, Red Bull, McLaren, Mercedes & Toro Rosso just don't understand the tyres.. :roll:
Completely understandable. I mean, if the maker has no idea, what chance has the consumer?
"Obviously today wasn't foreseen," said Hembery.
"We've seen something new, a different type of problem.
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thisisatest
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Re: Cut Tyres

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Kerbs could be new. Before the start of the race, the NBC guys here said that Silverstone had a revised layout for this year. I don't know what changed specifically... They also mentioned that the asphalt was fresh, "green".
Even when the courses are not repaved, you often hear about a track making certain Kerbs taller. Then drivers complain, and often they get knocked down a little bit before quali or the start.

Cold Fussion
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Re: Cut Tyres

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thisisatest wrote:Kerbs could be new. Before the start of the race, the NBC guys here said that Silverstone had a revised layout for this year. I don't know what changed specifically... They also mentioned that the asphalt was fresh, "green".
Even when the courses are not repaved, you often hear about a track making certain Kerbs taller. Then drivers complain, and often they get knocked down a little bit before quali or the start.
They were probably talking about the revised circuit layout, which changed a couple years ago to the awful rendition that it is now.

n_anirudh
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WhiteBlue
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The video shows one particular kerb that is called unsafe. I do not question that statement. The Kerb is not following best practise. But the question has to be is it relevant for the F1 tyre problem we currently see? Most likely the same curb has been in place for several years and several races with other tyres. So one can agree that the FiA should review their standards with regard to such sharp edges, but this is not the reducing the responsibility of Pirelli to bring tyres that are fit for racing on contemporary circuits.
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flyboy2160
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Re: Cut Tyres

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WhiteBlue wrote:The video shows one particular kerb that is called unsafe. I do not question that statement. The Kerb is not following best practise. ....
Didn't the FIA walk the track prior to the race weekend? Didn't the drivers walk the track and see this?

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Cam
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Re: Cut Tyres

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That video suggests that the kerb cuts the wall on the inside of the left hand tyre - closest to the floor of the car. Weren't the tyres exploding from the outside? All the tyres had the inner most part of the tyre still in place. When you pop a balloon, the point where you pop it disappears, leaving the remainder relatively intact. So the kerb affecting the inside wall of the left hand tyre - is not true - is it?
“There is only one good, knowledge, and one evil, ignorance.”
― Socrates
Ignorance is a state of being uninformed. Ignorant describes a person in the state of being unaware
who deliberately ignores or disregards important information or facts. © all rights reserved.

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WhiteBlue
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Re: Cut Tyres

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flyboy2160 wrote:
WhiteBlue wrote:The video shows one particular kerb that is called unsafe. I do not question that statement. The Kerb is not following best practise. ....
Didn't the FIA walk the track prior to the race weekend? Didn't the drivers walk the track and see this?
That points in the same direction as my post. The particular kerb may not be best practise but it wasn't seen as critical by those who walked the track for inspection. Only close scrutiny after the tyre blow outs revealed that it could have a contribution to the problem. As I have said before. It is most likely not the critical point.
Formula One's fundamental ethos is about success coming to those with the most ingenious engineering and best .............................. organization, not to those with the biggest budget. (Dave Richards)

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WhiteBlue
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Cam wrote:
That video suggests that the kerb cuts the wall on the inside of the left hand tyre - closest to the floor of the car. Weren't the tyres exploding from the outside? All the tyres had the inner most part of the tyre still in place. When you pop a balloon, the point where you pop it disappears, leaving the remainder relatively intact. So the kerb affecting the inside wall of the left hand tyre - is not true - is it?
No, Vettels tyres had the cuts on the inside of the left rear tyre.
Formula One's fundamental ethos is about success coming to those with the most ingenious engineering and best .............................. organization, not to those with the biggest budget. (Dave Richards)

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Cam
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Re: Cut Tyres

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WhiteBlue wrote:
Cam wrote:
That video suggests that the kerb cuts the wall on the inside of the left hand tyre - closest to the floor of the car. Weren't the tyres exploding from the outside? All the tyres had the inner most part of the tyre still in place. When you pop a balloon, the point where you pop it disappears, leaving the remainder relatively intact. So the kerb affecting the inside wall of the left hand tyre - is not true - is it?
No, Vettels tyres had the cuts on the inside of the left rear tyre.
What about the others - I heard outside on some. Trying to find source...

Would a inside wall failure explode outside -> inwards. Or the other way?
“There is only one good, knowledge, and one evil, ignorance.”
― Socrates
Ignorance is a state of being uninformed. Ignorant describes a person in the state of being unaware
who deliberately ignores or disregards important information or facts. © all rights reserved.

CBeck113
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Re: Cut Tyres

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If you watch a replay of Vergne's rupture you can see the white material (which must be the change, since I haven't seen it at all this year) on the inside of the tire just before it explodes - that's the source.
“Strange women lying in ponds distributing swords is no basis for a system of government. Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony!” Monty Python and the Holy Grail

beelsebob
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Re: Cut Tyres

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thisisatest wrote:Kerbs could be new. Before the start of the race, the NBC guys here said that Silverstone had a revised layout for this year. I don't know what changed specifically... They also mentioned that the asphalt was fresh, "green".
Even when the courses are not repaved, you often hear about a track making certain Kerbs taller. Then drivers complain, and often they get knocked down a little bit before quali or the start.
The curbs are not new. Sky F1 stated in their broadcast that they had a copy of Charly Whiting's track inspection which explicitly states there are no new curbs.

piast9
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Re: Cut Tyres

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Maybe the kerbs are not new but that green area is? Or maybe this green area collapsed a bit exposing the edge of the kerb? How do regular kerbs look like? Maybe there wasn't that green bit before which caused that drivers weren't going over the edge of the kerb? A lot of questions that have to be answered to conclude if that was the track which caused these tyre failures. I am afraid that Pirelli may think the same way and it will allow them to say that it wasn't the Pirelli's fault even if it was.

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strad
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SO it once again proves my point that the drivers should be required to drive ON the track...If they cut a tire becuase they want to straightline a corner..too bad..
That said,,,I would have sworn I saw Massa run over somethuing just prior to his tire letting go.
To achieve anything, you must be prepared to dabble on the boundary of disaster.”
Sir Stirling Moss

aral
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Re: Cut Tyres

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My reading of Pirelli statements says that cuts were not the cause of the exploding tyres.

A couple of weeks ago, there was debate about the tyres being swapped side to side. A close up photo of Massa's tyre remains, shows that the barcode label, on the left rear, is clearly marked R. If the tyres are manufactured with a bias in one direction, and this is reversed, for whatever reason, could this be putting extra strain on the bonding of the tread to the belt?

It was reported that Rosbergs tyre was starting to delaminate, with NO cuts apparent.