Italian Grand Prix 2015 - Race Thread

[TigerKing]

it was ONLY 0.3 PSI difference the Merc had on Luise's car.....couldn't have made THAT much difference....25 plus seconds he had the lead on Seb

Changing the tyre pressures even slightly does make a difference in performance. The fact is that Pirelli stated 19.5 or whatever the limit was is when they can guarantee safety. Mercedes shouldn't have done it at least for safety. We don't need to lose another driver this year.

[Nand0Nand0]

it was ONLY 0.3 PSI difference the Merc had on Luise's car.....couldn't have made THAT much difference....25 plus seconds he had the lead on Seb

Lewis's car was the first tested so it was closer to when the blankets were removed.

Teams were advised before the race that two things would be measured for a PSI test - tire surface temp which had to be within a range specified and the PSI.

Ferrari inflated their tires to give a legal PSI through the temp range specified - this higher inflation was noted by Bauer in his report.

Merc inflated their tires to pass the PSI test only at the upper level of the range pre-specified by the FiA.

The differential between the Merc inflation level and the Ferrari level was much greater, probably more that 10% and than would make a huge difference giving Merc much higher grip and lower deg.

Ferrari needs to learn from this.

[ragfone]

found this post today....

http://planetf1.com/news/gp2s-evans-...ble-standards/

irrespective of performance gains or not, rules should be rules and consistency from the stewards?

[mirafiori]

it was ONLY 0.3 PSI difference the Merc had on Luise's car.....couldn't have made THAT much difference....25 plus seconds he had the lead on Seb

Don't forget they only checked the one tyre (left rear) so who knows the true reading of all four tyres from the start of the race. All we know is Ferrari left rear tyre were legal from the start and Mercedes were not, during the race Mercedes tyres may well of been legal but not from the start of the race.

[Brembo]

Meanwhile Arriva has arrived at the desicion that Kimi's finger slipped and caused the neutral disaster. There has been no findings as far as mechanical failure to have been the cause. Kimi says that's not the case.

[Winter]

Meanwhile Arriva has arrived at the desicion that Kimi's finger slipped and caused the neutral disaster. There has been no findings as far as mechanical failure to have been the cause. Kimi says that's not the case.

Neutral disaster? How the car is supposed go to anti stall mode from neutral? Not likely..
And if Kimi was too aggressive with the clutch, there should've been smoking rear tires, no anti stall..

The car didn't move a bit when the lights went off. Still anti stall kicked in. How that is possible without mech/electrical clitch?
If the team would've seen Kimi being on the wrong gear etc. they sure would've warned him, because what happened was very dangerous..

I read some tinfoil cap even guessing that Kimi stalled just to hold Rosberg who started right behind him

[ForzaFerrariGo!]

It's incredible: http://www.formula1.com/content/fom-...he_Tifosi.html

ForzaFerrariGo!

[Hornet]

Don't forget they only checked the one tyre (left rear) so who knows the true reading of all four tyres from the start of the race. All we know is Ferrari left rear tyre were legal from the start and Mercedes were not, during the race Mercedes tyres may well of been legal but not from the start of the race.

The temperatures in question were taken 5 minutes before the start. Plenty of time to warm up, or cool down the tires.

Operating temperature is more important, not sure why people are so hung up on the tire pressure. At the end of the day, everyone will want to start with the tire at the right temperature.

[TigerKing]

It's incredible: http://www.formula1.com/content/fom-...he_Tifosi.html

ForzaFerrariGo!

Yah, i had goosebumps watching the final shots. I was really touched by the Jean Alesi sequence. I hope one day i will cheer on Ferrari at Monza and Imola wearing red all over!

[Nand0Nand0]

it was ONLY 0.3 PSI difference the Merc had on Luise's car.....couldn't have made THAT much difference....25 plus seconds he had the lead on Seb

As others have already pointed out, .3 will make a difference. But .3 wasn't the advantage Mercedes took into the race. It was a lot larger. As Jo Bauer pointed out in his report, Ferrari had much higher PSI than the min. That was because Ferrari inflated their tires to be above the min "at all times during the event" which is the requirement of the technical regulations. So the advantage Merc gained by under-inflating their tires was a lot more than .3

...not sure why people are so hung up on the tire pressure...

A lower the PSI at operating temp will give greater grip and less deg. So it is a very big advantage to run a lower PSI

[Greig]

As others have already pointed out, .3 will make a difference. But .3 wasn't the advantage Mercedes took into the race. It was a lot larger. As Jo Bauer pointed out in his report, Ferrari had much higher PSI than the min. That was because Ferrari inflated their tires to be above the min "at all times during the event" which is the requirement of the technical regulations. So the advantage Merc gained by under-inflating their tires was a lot more than .3

If Ferrari had a much higher PSI than the min then that's their own call.

[Nand0Nand0]

If Ferrari had a much higher PSI than the min then that's their own call.

Glad you agree with me, and it absolutely was Ferrari's decision to inflated their tires so they would be above the min PSI at any time during the event as specified by the regulations.

[Hornet]

A lower the PSI at operating temp will give greater grip and less deg. So it is a very big advantage to run a lower PSI

That's true, but I believe Merc has been cleared from the first reading, which was taken when the tires were at high temperature, and their pressure followed the minimum requirement.

So, when the tires are at operating temperature, the pressure too will be high enough as they have shown in the first measurement. I don't see any way Merc can somehow utilize lower pressure then.

[Nand0Nand0]

That's true, but I believe Merc has been cleared from the first reading, which was taken when the tires were at high temperature, and their pressure followed the minimum requirement.

So, when the tires are at operating temperature, the pressure too will be high enough as they have shown in the first measurement. I don't see any way Merc can somehow utilize lower pressure then.

If you inflate your tires to be at or above min for anytime when your car can be tested then you're going to run 21.5 at the coolest the tires will be. That will mean your PSI at the max temp will be much higher. If Merc ran their PSI at 21.5 fresh out of the blanket then they would have known for sure that their PSI would be under when the blankets were off and they would also know that because their car is stationary and flat on the grid before the warm up lap that they were subject to be tested. Gary Anderson has got this one right.