2017 Tyres revealed

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F1NAC
163
Joined: 31 Mar 2013, 22:35

Re: 2017 Tyres revealed

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roon wrote:
10 Mar 2017, 01:24
Is there a term for the circumferential bead of rubber that builds up on the tire during cornering?

https://s9.postimg.org/o90tjip7j/image.jpg

https://s9.postimg.org/ub8ga0dnj/image.jpg
Graining? looks like that.

n4rf
34
Joined: 21 Apr 2015, 21:59

Re: 2017 Tyres revealed

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F1NAC wrote:
07 Apr 2017, 22:18
roon wrote:
10 Mar 2017, 01:24
Is there a term for the circumferential bead of rubber that builds up on the tire during cornering?

https://s9.postimg.org/o90tjip7j/image.jpg

https://s9.postimg.org/ub8ga0dnj/image.jpg
Graining? looks like that.
I would call it blistering or forming of blisters. It is locally too hot rubber that results in the surface of the tire bursting open (blistering). So it is not a bead of rubber. But this dark strip is characteristic for this phenomenon.

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FrukostScones
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Joined: 25 May 2010, 17:41
Location: European Union

Re: 2017 Tyres revealed

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AMuS: Pirelli tricked into raising tyre pressures by being handed incorrect (too high) down force values coming always from two certain teams.

http://www.auto-motor-und-sport.de/form ... 34439.html
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BanMeToo
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Joined: 27 Dec 2013, 16:26
Location: USA

Re: 2017 Tyres revealed

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F1NAC
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Joined: 31 Mar 2013, 22:35

Re: 2017 Tyres revealed

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Ultrasoft for Spa!
Image

BanMeToo
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Joined: 27 Dec 2013, 16:26
Location: USA

Re: 2017 Tyres revealed

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No more hard tires for 2017.

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godlameroso
309
Joined: 16 Jan 2010, 21:27
Location: Miami FL

Re: 2017 Tyres revealed

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Does it make sense to bring ultra softs to Italy?
Saishū kōnā

SameSame
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Joined: 16 Jun 2016, 18:44

Re: 2017 Tyres revealed

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How can Spa and Monaco have the same tyre allocation #-o Did Pirelli not say they had softer back-up compounds available?

ENGINE TUNER
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Joined: 29 Nov 2016, 18:07

Re: 2017 Tyres revealed

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godlameroso wrote:
22 Jun 2017, 18:30
Does it make sense to bring ultra softs to Italy?
Way more sense than bringing them for Spa

ENGINE TUNER
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Joined: 29 Nov 2016, 18:07

Re: 2017 Tyres revealed

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SameSame wrote:
22 Jun 2017, 20:23
How can Spa and Monaco have the same tyre allocation #-o Did Pirelli not say they had softer back-up compounds available?
I think the back ups were not softer but had more thermal deg built in, not %100 sure though

FPV GTHO
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Joined: 22 Mar 2016, 05:57

Re: 2017 Tyres revealed

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I thought the backups were harder, invade development significantly ramped up.

wuzak
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Joined: 30 Aug 2011, 03:26

Re: 2017 Tyres revealed

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ENGINE TUNER wrote:
22 Jun 2017, 20:28
SameSame wrote:
22 Jun 2017, 20:23
How can Spa and Monaco have the same tyre allocation #-o Did Pirelli not say they had softer back-up compounds available?
I think the back ups were not softer but had more thermal deg built in, not %100 sure though
I think you are correct. The backup compounds had more degradation designed in.

DaveW
239
Joined: 14 Apr 2009, 12:27

Re: 2017 Tyres revealed

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Might this be something to do with F1's problems? The image is an animated GIF, better viewed at 200% on my computer, recorded at Spa Q1, I think. The instability, affecting the whole structure, was probably caused by kerbs, but tyres were clear of kerbs in the recording.

Your comments, please....

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FW17
165
Joined: 06 Jan 2010, 10:56

Re: 2017 Tyres revealed

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New tyres are good but it is quiet sad that the current engines with almost a 1000 hp could not crack the 350 kph mark and nowhere close to the all time speed record of 372kph

The current tyres now seem to be limited to just 3 specs in most races with medium and hard not going to be seen again

I think for 2018 Pirelli can offer the 3 softest tyres in 2 sizes to have a range of 6 tyres. 3 types, ultra softs, supersofts and softs in 2017 sizes (305 front 405 rear) and 3 types, ultra softs, supersofts and softs in 2016 sizes (245 front 325 rear)

Image

If they did that will the chassis be able to handle 2 different tyre sizes during the race?

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henry
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Joined: 23 Feb 2004, 20:49
Location: England

Re: 2017 Tyres revealed

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DaveW wrote:
03 Sep 2017, 10:37
Might this be something to do with F1's problems? The image is an animated GIF, better viewed at 200% on my computer, recorded at Spa Q1, I think. The instability, affecting the whole structure, was probably caused by kerbs, but tyres were clear of kerbs in the recording.

Your comments, please....
That's certainly very dramatic footage but it's hard to know how to compare that to any previous era. We have had, in the past, occasional slo-mos of transverse vibrations in slow corners and the notorious Michelin standing waves from Indy.

I wonder if these vibrations were so pronounced because once established there was nothing to attenuate them. The transverse vibrations seen in cornering go away when direction is changed but here the input power to the tyres is pretty much constant as soon as the driver demands WOT.

Incidentally the transverse vibrations were to be seen in the safety car's rear tyres as it traversed the chicanes in the rain during the reconnaissance laps before qualification.
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