2015 Belgian Grand Prix - 21-23 August

[LionKing]

Read Alan Permane's and Andy Green's statements about the failed tire:

http://thejudge13.com/2015/08/23/teams- ... t-pirelli/

He is backed up by team members of Lotus and Force India, who refuse to believe Pirelli’s explanation of excessive tyre wear. “If Pirelli tells us the tyres last 40 laps, they can’t possibly blow up after 28 laps. For us a one-stop strategy was only a backup plan, but we considered it as well,” Lotus’ Alain Permane explained.

Force India’s Andy Green puts it a bit more directly. “If Vettel’s tyres had been worn out, he’d have come into the pits. As soon as the rubber is worn below 30% the lap times go up by two to three seconds and tyre temperatures drop from 140°C to 110°C. You’re driving on ice in that case, you won’t even get anywhere near critical wear. Your team would call you in long before that happens.”

[LionKing]

So how can between 28 and 40 still hold true if the pressures and track limits aren't being respected? That figure will drop, and anyone can see that if they just choose to look.

Where is your proof of Ferrari tire pressures?

There is a Pirelli engineer at Ferrari too. I am sure Pirelli would have made all the noise in the world by now if Ferrari somehow used tire pressures outside the range given by Pirelli.

[ringo]

To add to the tyre failure, Vettel is known to drive wide and off track. He definitely contributed to the tyre failure by abrassion on the kerbs and what have you. Anyhow pirelli is somewhat responsible for how the tyre fails when the rubber is finished, but Ferrari provoked the failure.
I would to see how different Formula1 would be with Michelin back in the game.

[PlatinumZealot]

The number of laps the tyres can do is based on the car driving on smooth TARMAC. Vettel was driving off road over curbs and gravel every single lap. Is it not obvious that the tyre got damaged due to this? You can even see it was a small knick that progressively turned into a bigger tear and then total delamination once vettel dipped his tyre down on the right side of the track at 300kph pushishing like hell for leather TWENTY EIGHT SPA laps in a row.

[LionKing]

Lap times etc, does not suggest that his tires are finished.
Neither does the technical director of FI believe that BS at all.
Nor does it fit the story of a tire that is supposed to last 40 lap.
Vettel wasn't nowhere as heavy as fuel as on start, he was not following another car very closely to have the temp increased. It was not a particularity hot race either.

This is just Pirelli trying to avoid bad PR.

[The_table]

Do Rosberg's incident and Vettel's incident look similar at all? (As far as HOW the tyre looks when exploding.)

[Jano11]

The number of laps the tyres can do is based on the car driving on smooth TARMAC. Vettel was driving off road over curbs and gravel every single lap. Is it not obvious that the tyre got damaged due to this? You can even see it was a small knick that progressively turned into a bigger tear and then total delamination once vettel dipped his tyre down on the right side of the track at 300kph pushishing like hell for leather TWENTY EIGHT SPA laps in a row.

That tire delaminated while it had rubber thread on it and then exploded. This is a structural issue.
Look at how other drivers were riding the curbs, for example Lewis at the exit of Eau Rouge, or Verstapen in all corners more or less.
I can somehow, difficultly accept, a tire that loses performance fast at the end of it's lifetime, but no tire should explode before it is down to canvas, and this one had quite a bit of rubber on it which we could see when it delaminated, see slow motions.
Either a structural issue that Pirelli has to address fast cause Monza will be worse, or a manufacturing problem with this one tire. In any case the tire manufacturer should man up and accept that their tire was not up to the task, instead of feeding us the same old marketing rubbish we hear from Hembery since several moons.

[Jano11]

Lap times etc, does not suggest that his tires are finished.
Neither does the technical director of FI believe that BS at all.
Nor does it fit the story of a tire that is supposed to last 40 lap.
Vettel wasn't nowhere as heavy as fuel as on start, he was not following another car very closely to have the temp increased. It was not a particularity hot race either.

This is just Pirelli trying to avoid bad PR.

I think the adhesive layer between the thread rubber and the carcass gave up due to the large temperatures and lateral loads in Eau Rouge.
There was a shot from the Thermal camera on Vettel's car a few laps before and it was impressive to see how fast the tire was overheating and cooling down when through Eau Rouge and on the straight afterwards.
IMO the tire wasn't up to the task for all these temperature and mechanical loads.
Luckily it didn't give up through Eau Rouge or under breaking at the end of the straight.

[Spoutnik]

He's always in sideway trough the low-mid speed corner, sorry but Ferrari really take big risk, what a stupid team with their strategies to hide the inability of Vettel to overtake.

[Jano11]

Read Alan Permane's and Andy Green's statements about the failed tire:

http://thejudge13.com/2015/08/23/teams- ... t-pirelli/

He is backed up by team members of Lotus and Force India, who refuse to believe Pirelli’s explanation of excessive tyre wear. “If Pirelli tells us the tyres last 40 laps, they can’t possibly blow up after 28 laps. For us a one-stop strategy was only a backup plan, but we considered it as well,” Lotus’ Alain Permane explained.

Force India’s Andy Green puts it a bit more directly. “If Vettel’s tyres had been worn out, he’d have come into the pits. As soon as the rubber is worn below 30% the lap times go up by two to three seconds and tyre temperatures drop from 140°C to 110°C. You’re driving on ice in that case, you won’t even get anywhere near critical wear. Your team would call you in long before that happens.”

Right. These people know what they talk, they are technical directors in F1.
Looks like the teams' patience with Pirelli is wearing thin, hopefully there will be a change soon.

[Jano11]

He's always in sideway trough the low-mid speed corner, sorry but Ferrari really take big risk, what a stupid team with their strategies to hide the inability of Vettel to overtake.

Troll.

[Jano11]

Am I the only one who expected Vettel's tires to fall off?

Yes you are, you strive on schadenfreude.

[Jano11]

I would to see how different Formula1 would be with Michelin back in the game.

Imagine being able to drive really fast, not 7 seconds/lap of the pole time.

[Spoutnik]

He's always in sideway trough the low-mid speed corner, sorry but Ferrari really take big risk, what a stupid team with their strategies to hide the inability of Vettel to overtake.

Troll.

No. I'm sorry but if Ferrari with a "random" strat (2 stops) can't even outperformed the Lotus of Grosjean for the 3rd place, idk why everyone said "Vettel want to win this championship" IMO he's inconsistent like his team and he made also; often; some mistakes.

[TAG]

http://www.skysports.com/f1/news/12526/ ... xmiUhJfzV2

In the above link, Sky has a very good video of the event. If you look at Vettel's line after getting through Eu Rouge, he's two feet further out than Grosjean was while following behind him. (He did that consistently throughout the race) The blowout happens immediately after that.

Then there's this which I find has been Pirelli's uphill battle.