2007 Tyres

Anyone want to speculate on which two of the four 2007 compounds have been
allocated for each event?

To clarify - Bridgestone have developed four compounds for 2007 - Hard,
Medium Hard, Medium Soft & Soft. They have already decided which two will
be used at each event, and have notified the teams.

Pre-Christmas testing evaluated the Hard (Barcelona) and Medium Hard (Jerez)
compounds. This month's sessions will utilise the Medium Soft and Soft - I
don't know which at which circuit at this time.

Incidentally, Article 77 (d specifies that each driver MUST use at least one
set of each compound during a race (unless the race is wet, and obviously,
assuming they don't retire before they are able to change tyres).

--

Brian W Lawrence
Wantage,
Oxfordshire, UK
Brian_W_Lawrence@msn.com

Brian Lawrence wrote:
> Anyone want to speculate on which two of the four 2007 compounds have been
> allocated for each event?
>
> To clarify - Bridgestone have developed four compounds for 2007 - Hard,
> Medium Hard, Medium Soft & Soft. They have already decided which two will
> be used at each event, and have notified the teams.
>
> Pre-Christmas testing evaluated the Hard (Barcelona) and Medium Hard (Jerez)
> compounds. This month's sessions will utilise the Medium Soft and Soft - I
> don't know which at which circuit at this time.
>
> Incidentally, Article 77 (d specifies that each driver MUST use at least one
> set of each compound during a race (unless the race is wet, and obviously,
> assuming they don't retire before they are able to change tyres).
>

Each driver must change compound during the race - not the whole meeting???

That's a major change. I think the tactics will surely be heavy tank
with hard compound at the beginning and light loads with soft compounds
at the end.

Interesting, most interesting.

In message <50vcnjF1hh2epU1@mid.individual.net>, Brian Lawrence
<Brian_W_Lawrence@msn.com> writes
>
>Incidentally, Article 77 (d specifies that each driver MUST use at least one
>set of each compound during a race (unless the race is wet, and obviously,
>assuming they don't retire before they are able to change tyres).
>
I'm not too sure what that's all about? Why would they want to make a
team use a compound which is not suitable for the car or the conditions?
In some circumstances it could be dangerous.

--
Paul Giverin

British Jet Engine Website http://www.britjet.co.uk

In message <45ab62c0$1@nntp.onyx.net>, "Knight who says \"NI!\""
<no@spam.required> writes
>
>
>Each driver must change compound during the race - not the whole meeting???
>
>That's a major change. I think the tactics will surely be heavy tank
>with hard compound at the beginning and light loads with soft compounds
>at the end.
>
I would say the tactics would be a light fuel load (post qualifying
laps) with a soft compound and move to the harder compound at the first
pit stop when the fuel load will be highest.

--
Paul Giverin

British Jet Engine Website http://www.britjet.co.uk

In article <hmxhJSDeB3qFFwpg@10.0.0.3>, Paul Giverin
<paul@giverin.co.uk> writes:

> In message <45ab62c0$1@nntp.onyx.net>, "Knight who says \"NI!\""
> <no@spam.required> writes
> >
> >
> >Each driver must change compound during the race - not the whole meeting???
> >
> >That's a major change. I think the tactics will surely be heavy tank
> >with hard compound at the beginning and light loads with soft compounds
> >at the end.
> >
> I would say the tactics would be a light fuel load (post qualifying
> laps) with a soft compound and move to the harder compound at the first
> pit stop when the fuel load will be highest.

That's what I'd have thought too, especially remembering back years to
when James Hunt was the pundit alongside Murray Walker. He said that
it was daft to try and husband tyres and change them late (this was
when a single pitstop was the norm), because the rubber was being laid
down on the track, the wear rate was lower later in the race, so you
were best off changing around 1/3 race distance and changing after 1/2
distance was wasting grip.

--
Mike Fleming

"Brian Lawrence" <Brian_W_Lawrence@msn.com> wrote:

> To clarify - Bridgestone have developed four compounds for 2007 - Hard,
> Medium Hard, Medium Soft & Soft. They have already decided which two will
> be used at each event, and have notified the teams.
>
> Pre-Christmas testing evaluated the Hard (Barcelona) and Medium Hard (Jerez)
> compounds. This month's sessions will utilise the Medium Soft and Soft - I
> don't know which at which circuit at this time.

Apparently the third compound (probably Medium Soft) was tried out for the
first time at Valencia on Thursday (Feb 1). Nick Heidfeld was the first to
take the plunge, but most of the other drivers followed suit by the end of
the day.

The fourth compound (Soft?) still remains to be evaluated by the teams.

--

Brian

	#1
Brian Lawrence	2007 Tyres Anyone want to speculate on which two of the four 2007 compounds have been allocated for each event? To clarify - Bridgestone have developed four compounds for 2007 - Hard, Medium Hard, Medium Soft & Soft. They have already decided which two will be used at each event, and have notified the teams. Pre-Christmas testing evaluated the Hard (Barcelona) and Medium Hard (Jerez) compounds. This month's sessions will utilise the Medium Soft and Soft - I don't know which at which circuit at this time. Incidentally, Article 77 (d specifies that each driver MUST use at least one set of each compound during a race (unless the race is wet, and obviously, assuming they don't retire before they are able to change tyres). -- Brian W Lawrence Wantage, Oxfordshire, UK Brian_W_Lawrence@msn.com

	#2
Knight who says \NI!\	Re: 2007 Tyres Brian Lawrence wrote: > Anyone want to speculate on which two of the four 2007 compounds have been > allocated for each event? > > To clarify - Bridgestone have developed four compounds for 2007 - Hard, > Medium Hard, Medium Soft & Soft. They have already decided which two will > be used at each event, and have notified the teams. > > Pre-Christmas testing evaluated the Hard (Barcelona) and Medium Hard (Jerez) > compounds. This month's sessions will utilise the Medium Soft and Soft - I > don't know which at which circuit at this time. > > Incidentally, Article 77 (d specifies that each driver MUST use at least one > set of each compound during a race (unless the race is wet, and obviously, > assuming they don't retire before they are able to change tyres). > Each driver must change compound during the race - not the whole meeting??? That's a major change. I think the tactics will surely be heavy tank with hard compound at the beginning and light loads with soft compounds at the end. Interesting, most interesting.

	#3
Paul Giverin	Re: 2007 Tyres In message <50vcnjF1hh2epU1@mid.individual.net>, Brian Lawrence <Brian_W_Lawrence@msn.com> writes > >Incidentally, Article 77 (d specifies that each driver MUST use at least one >set of each compound during a race (unless the race is wet, and obviously, >assuming they don't retire before they are able to change tyres). > I'm not too sure what that's all about? Why would they want to make a team use a compound which is not suitable for the car or the conditions? In some circumstances it could be dangerous. -- Paul Giverin British Jet Engine Website http://www.britjet.co.uk

	#4
Paul Giverin	Re: 2007 Tyres In message <45ab62c0$1@nntp.onyx.net>, "Knight who says \"NI!\"" <no@spam.required> writes > > >Each driver must change compound during the race - not the whole meeting??? > >That's a major change. I think the tactics will surely be heavy tank >with hard compound at the beginning and light loads with soft compounds >at the end. > I would say the tactics would be a light fuel load (post qualifying laps) with a soft compound and move to the harder compound at the first pit stop when the fuel load will be highest. -- Paul Giverin British Jet Engine Website http://www.britjet.co.uk

	#5
Mike Fleming	Re: 2007 Tyres In article <hmxhJSDeB3qFFwpg@10.0.0.3>, Paul Giverin <paul@giverin.co.uk> writes: > In message <45ab62c0$1@nntp.onyx.net>, "Knight who says \"NI!\"" > <no@spam.required> writes > > > > > >Each driver must change compound during the race - not the whole meeting??? > > > >That's a major change. I think the tactics will surely be heavy tank > >with hard compound at the beginning and light loads with soft compounds > >at the end. > > > I would say the tactics would be a light fuel load (post qualifying > laps) with a soft compound and move to the harder compound at the first > pit stop when the fuel load will be highest. That's what I'd have thought too, especially remembering back years to when James Hunt was the pundit alongside Murray Walker. He said that it was daft to try and husband tyres and change them late (this was when a single pitstop was the norm), because the rubber was being laid down on the track, the wear rate was lower later in the race, so you were best off changing around 1/3 race distance and changing after 1/2 distance was wasting grip. -- Mike Fleming

	#6
Brian Lawrence	Re: 2007 Tyres "Brian Lawrence" <Brian_W_Lawrence@msn.com> wrote: > To clarify - Bridgestone have developed four compounds for 2007 - Hard, > Medium Hard, Medium Soft & Soft. They have already decided which two will > be used at each event, and have notified the teams. > > Pre-Christmas testing evaluated the Hard (Barcelona) and Medium Hard (Jerez) > compounds. This month's sessions will utilise the Medium Soft and Soft - I > don't know which at which circuit at this time. Apparently the third compound (probably Medium Soft) was tried out for the first time at Valencia on Thursday (Feb 1). Nick Heidfeld was the first to take the plunge, but most of the other drivers followed suit by the end of the day. The fourth compound (Soft?) still remains to be evaluated by the teams. -- Brian