2017 Tyres revealed

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F1NAC
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Re: 2017 Tyres revealed

Post by F1NAC » Fri Apr 07, 2017 9:18 pm

roon wrote:
Fri Mar 10, 2017 12:24 am
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
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Re: 2017 Tyres revealed

Post by n4rf » Sun May 21, 2017 6:06 pm

F1NAC wrote:
Fri Apr 07, 2017 9:18 pm
roon wrote:
Fri Mar 10, 2017 12:24 am
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.

FrukostScones
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Re: 2017 Tyres revealed

Post by FrukostScones » Mon May 22, 2017 2:18 pm

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

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BanMeToo
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Re: 2017 Tyres revealed

Post by BanMeToo » Mon May 22, 2017 9:15 pm


F1NAC
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Re: 2017 Tyres revealed

Post by F1NAC » Thu Jun 22, 2017 10:26 am

Ultrasoft for Spa!
Image

BanMeToo
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Re: 2017 Tyres revealed

Post by BanMeToo » Thu Jun 22, 2017 5:17 pm

No more hard tires for 2017.

godlameroso
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Re: 2017 Tyres revealed

Post by godlameroso » Thu Jun 22, 2017 5:30 pm

Does it make sense to bring ultra softs to Italy?
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SameSame
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Re: 2017 Tyres revealed

Post by SameSame » Thu Jun 22, 2017 7:23 pm

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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Re: 2017 Tyres revealed

Post by ENGINE TUNER » Thu Jun 22, 2017 7:24 pm

godlameroso wrote:
Thu Jun 22, 2017 5:30 pm
Does it make sense to bring ultra softs to Italy?
Way more sense than bringing them for Spa

ENGINE TUNER
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Re: 2017 Tyres revealed

Post by ENGINE TUNER » Thu Jun 22, 2017 7:28 pm

SameSame wrote:
Thu Jun 22, 2017 7:23 pm
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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Re: 2017 Tyres revealed

Post by FPV GTHO » Thu Jun 22, 2017 8:13 pm

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

wuzak
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Re: 2017 Tyres revealed

Post by wuzak » Tue Jul 04, 2017 7:30 am

ENGINE TUNER wrote:
Thu Jun 22, 2017 7:28 pm
SameSame wrote:
Thu Jun 22, 2017 7:23 pm
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
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Re: 2017 Tyres revealed

Post by DaveW » Sun Sep 03, 2017 9:37 am

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....

FW17
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Re: 2017 Tyres revealed

Post by FW17 » Mon Sep 04, 2017 7:43 am

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?

henry
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Re: 2017 Tyres revealed

Post by henry » Mon Sep 04, 2017 10:11 am

DaveW wrote:
Sun Sep 03, 2017 9:37 am
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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