2014 Brazilian Grand Prix - São Paulo

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Perhaps Hamilton has a far more wet weather setup compared to Rosberg.

Bruno commented that it wont make sense running a wet setup at such an early stage.

Even if it's not a full wet set up, he is running more down-force I think. Nothing between him and Nico in sector 1, Lewis a tenth faster in sector 2, nico a tenth faster in sector 3.

...and Lewis 2 km/h faster at the speed trap, that doesn't really fit...

I think its more likely the reason is a different one: Rosberg set his fastest sector times on the first flying lap, Hamilton on his 5th - that's a ~2 tenths difference on fuel load, and the middle sector is the one were the weight of the car has the most influence.

[Hail22]

And here is Ferrari's Flame thrower PU:

[youtube]http://www.youtube.com/watch?v=srFURpR9KNE[/youtube]

[SiLo]

As usual, you can't really pick between the Mercs. Qualifying has been really exciting this year (between these two).

I really hope Torro Rosso can get up in the action as well, I love watching those guys punch above their weight.

[Juzh]

Rosberg's tire after 10 laps. Forget spa 2011, this is a whole different level.

[Glyn]

Rosberg's tire after 10 laps. Forget spa 2011, this is a whole different level.

https://pbs.twimg.com/media/B12vHCtIQAEvWF7.jpg

What has happened there?

[mikeerfol]

Nothing, just wear...

[Juzh]

Nothing, just wear...

Blisters. Not the same.

[mikeerfol]

Indeed

[gray41]

Showers all day in Interlagos?

[marcush.]

Nothing, just wear...

Blisters. Not the same.

A blister is developing from inside out -the carcass is overheating and delaminating/separating the tread from the lower structure .... so its the opposite of graining ...when you rub off the rubber without being able to put heat into the carcass.

How does this come ? you may overwork the carcass by underinflating the tyre ,or by using extreme cambers ..but these two would not produce the blisters in the middle but the inside of the tread.


but those blisters are in the midlle(!!) of the tyre which is a bit unusual ..possibly the hot pressure was completely through the window... so basically the temperature is too high in the middle of the tread because of a reduced contact patch due to overinflation . If it was just the tyre not suitable for the loads I ´m pretty sure the blisters would not be just in the middle....but then the whole tyre looks like it was abused (heavy graining on the inside ) so what might have caused the high pressure was the overheating of the tyre -deforming the carcass -leading to a reduced contact patch -killing the tyre in the braking zone.....

Is it possible to delaminate a tread by putting enough heat through the tread ...looking at a flat spotted tyre this seems to be the case:


One would expect the inside near the shoulder to develop blisters ...(also due to the heat conduction from the belt into the sidewalls is not a straight through)

[OrangeArrows]

Fastest lap ever 1:09.822 is in sight.

[Gaz.]

Did this ever happen with Goodyears, Bridgestone & Michelin?

[deterherligt]

Did this ever happen with Goodyears, Bridgestone & Michelin?

Canada 2010 mayhaps?

[iotar__]

Did this ever happen with Goodyears, Bridgestone & Michelin?

Not on newly resurfaced Interlagos with (new) 2014 cars and engines in 50+ degrees temperature, in practice, with tyres designed and chosen for a certain number of pitstops in the race with two differently behaving compounds - no it did not . Why do you ask? I bet tyres looked great after Sochi.

[marcosp]

I've never experienced 50+ degrees in Sao Paulo... it's 25 degrees now, 39 on the tarmac.