Pirelli 2013

[WhiteBlue]

They have been taken for a ride by Bernie because they are Rookies in the F1 politicking game. All they had to do when they realized something had gone wrong was going to the FiA and demanding a rule change on testing based on future safety concerns. That card always is a trump with the federation. They would have got all they got now and without the Silverstone embarrassment.

What would Todt do if you tell him that you cannot design save tyres and have 2-3 pit stops without more testing? Exactly what he has done now. Pirelli could have resolved the whole mess by having a private chat if they had reacted in April rather than last week. Instead they now have to re arrange the deck chairs on the Titanic. Hembery is a joke for the F1 sharks and the fans from now on.

[Huntresa]

They have been taken for a ride by Bernie because they are Rookies in the F1 politicking game. All they had to do when they realized something had gone wrong was going to the FiA and demanding a rule change on testing based on future safety concerns. That card always is a trump with the federation. They would have got all they got now and without the Silverstone embarrassment.

What would Todt do if you tell him that you cannot design save tyres and have 2-3 pit stops without more testing? Exactly what he has done now. Pirelli could have resolved the whole mess by having a private chat if they had reacted in April rather than last week. Instead they now have to re arrange the deck chairs on the Titanic. Hembery is a joke for the F1 sharks and the fans from now on.

But up until now no one knew this would happen. Up until now we had delaminations which was actually something pirelli wanted to happen instead of blow outs.

But what i wanted instead atleast was what i wrote above, issue statement bout safe rules for using the tyres so they cant be liable if someone goes beyond the rules. To me its not strange that something goes wrong when you use something in the wrong way, but since Pirelli didnt inform the teams correctly or enough they are now in this crap situation instead.

[aral]

This is not a tyre thread (pun not intended)......... but when a rh wheel is put on the lh side, the inner wall will still be the inner wall.

Remember, the 2013 tyres have some ply-steer built in

Exactly, that is what I said! In the tyre industry, it is created by the bias in the weave of the belt.

[Matt Somers]

Thats their own markings, you need to check the barcode label for the correct L or R.

Yea I should really have worded that post very differently... Anyway after a bit of investigation work from the Sutton gallery I posted this yesterday http://www.pitpass.com/49423-Technicall ... e-Swapping The problem of course is seeing the barcode at speed is near on impossible LOL All I can say is that at Silverstone Rosberg, Webber and Alonso had right hand tyres (barcode) on the left side of the car.

[Cam]

The funniest part of this whole tyre swapping saga - Pirelli actually promote it as part of their tyre warranty
http://www.pirelli.com/tire/us/en/car/g ... .tab?tab=3

[turbof1]

I'm speechless. So they even promote swapping tyres?

Makes me a proud michelin tyre owner.

[Blanchimont]

http://www.michelinman.com/tires-101/ti ... ation.page

It's a common practise to swap tyres on road cars!

[WhiteBlue]

And according to Scarbs it has been done for years with the F1 Pirellis as well. So it becomes totarily pointless to even talk about this.

[aral]

Thats their own markings, you need to check the barcode label for the correct L or R.

Yea I should really have worded that post very differently... Anyway after a bit of investigation work from the Sutton gallery I posted this yesterday http://www.pitpass.com/49423-Technicall ... e-Swapping The problem of course is seeing the barcode at speed is near on impossible LOL All I can say is that at Silverstone Rosberg, Webber and Alonso had right hand tyres (barcode) on the left side of the car.

https://pbs.twimg.com/media/BOQ00fbCYAEcX1y.jpg:large

I am a bit surprised that you did not see the photo that has appeared on other sites and papers (source not identified) of Massa's LEFT rear after the explosion, with the bar code label clearly showing R .

[Holm86]

It's not utterly pointless. All Pirelli tires has been symmetrical so far. This year they are asymmetrical. So of course it will make a difference when swapping lefts to right and vice versa. Though Pirelli shoud have stated that swapping tires is prohibited if they had any thought of it being dangerous.

[autogyro]

And according to Scarbs it has been done for years with the F1 Pirellis as well. So it becomes totarily pointless to even talk about this.

I dont think it is completely pointless.

All tyre makers suggest tyre swapping at service intevals to equalise the tread wear and extend the life of a set of tyres on road cars.
It usualy means swapping tyres on the drive axle for those on an undriven axle.
Of course tyres designed to rotate in one direction should not be swapped to a position that reverses this rotation.

In F1 any tyre swapping would be for 'used tyres' so as to even out tread wear across the axle.
I understand that it is an established practice.
Of course this practice falls down if the tyres are designed to rotate only one way.
The arrows and tyre markings do not comfirm this.
The question is, Why do the tyres have markings showing where they should be fitted on the car?

IMO all these factors, swapping tyres, kerbs, under-inflation and camber angles are contributory.
It is the tyre design that is not up to the demands of F1 use.

[rjsa]

The funniest part of this whole tyre swapping saga - Pirelli actually promote it as part of their tyre warranty
http://www.pirelli.com/mediaObject/pire ... on-big.png http://www.pirelli.com/tire/us/en/car/g ... .tab?tab=3

The way tyres are to be swapped depends on each tyre's design.

Some are directional:


Some are asmetrical, having 'outside' and inside:


Some are one design fits all:


This only shows the thread design aspect of it. Then there is the carcas structural layout that has a say in it, which obviously is the case of slick racing tyres.

[Diff-user]

People, lets not compare road car tyres and F1 tyres here. We all know any resemblance between any road car part and an F1 car are purely superficial. That said, we have to know that Pirelli was really caught in a sandwich of bad decisions from the FIA/Bernie side. The year they entered, in season testing was banned. And Bernie wanted to spice things up with tyres that have a large difference in the way they behave over their (brief) life time. So in short they had to develop tyres at the very edge of safe degradation levels with minimal in-season testing. And now when the sh*t hitteth the fan, FIA and the whole of F1 fraternity want an answer from Pirelli. And needless to say, Pirelli will try best to salvage their reputation by blaming every thing else.
Bad policy decisions led to this. No tyre manufacturer ever wants to create tyres that live shorter than a lap. Hell, this direction of "development" might not have even occurred to Pirelli before the FIA/Bernie told them about it.

[WhiteBlue]

Holm68, we really do not have a disagree here. Tire swapping has been done for years purely to max out the tread thickness of tyre sets for the race. Pirelli knew this and did nothing to stop it when they decided to go to the weaker 2013 carcass/construction. My point is that they do not have a leg to stand on blaming the teams. We all know that there were no weapons of mass destruction in Irak, Anna Nicole Smith did not marry for love and there was a safety problem with the 2013 Pirellis. Let's leave it that way.

[stefan_]

Picture from Germany - the tires don't have the marking that tells which side they go on.


But not all of them