The Renault F1 Team completed a third day of testing in Jerez.
Circuit: Jerez de la Frontera

Length: 4.4 km

Driver: Vitaly Petrov

Chassis: R3002

Total Laps: 68

Fastest Lap: 1:22.000

Summary of the day: A dry start lasted for just over an hour before the rain returned making for damp conditions for the rest of the day. The team adapted its programme and Vitaly completed 68 laps acclimatising to the R30 in the wet and completing some practice starts.

Vitaly Petrov: “In the morning we managed to do a bit of dry running and the car felt good and well balanced. Then, when the rain arrived, we did quite a lot of work as it was important for me to understand how the car behaves in the wet conditions and the characteristics of the wet and intermediate Bridgestone tyres. That went well and we also did a lot of practice starts as I learn the procedures and systems on the car.”

Alan Permane, Chief Engineer: “Another very wet day, but we managed to complete a couple of dry runs early this morning and Vitaly was pretty happy with the car. Then it started raining and remained wet for the rest of the day so we spent our time putting mileage on the engine and on some new parts. The wet conditions also gave Vitaly the chance to try both the wet and intermediate Bridgestone tyres and he seemed comfortable with both of them.”

Jerez Test Schedule:
Saturday 13 February: Robert Kubica

The Renault F1 Team completed a productive second day of testing in Jerez.
Circuit: Jerez de la Frontera

Length: 4.4 km

Driver: Robert Kubica

Chassis: R30 02

Total Laps: 103

Fastest Lap: 1:22.003

Summary of the day: Dry conditions allowed the team to complete good mileage, making use of the dry tyres saved from yesterday. The technical programme was focussed on set-up work and continued assessment of the narrower front Bridgestone tyres.

Robert Kubica: “We started the day with a damp track so we had to wait for conditions to improve before we started our main programme. We made good progress with the workload and did some set-up evaluation and tried to understand how the changes influenced the balance and behaviour of the car. We saw some nice results and learnt some interesting things so overall it was a good day.”

Alan Permane, Chief Engineer: “Another very productive day as we completed over 100 laps and did a lot of set-up work with the car. We had made a lot of changes for Robert since the last test in Valencia and he’s now much more comfortable and happier in the car. We steadily improved the balance and grip throughout the day and hopefully we can continue with this tomorrow if the rain holds off.”

Jerez Test Schedule:
Friday 12 February: Vitaly Petrov
Saturday 13 February: Robert Kubica

Welcome to F1 Minute for the 5th February 2010.

Virgin Racing took their car to the track today, as it completed it’s first ever run in a shakedown at Silverstone. Nick Wirth said: “Today was all about those tentative first few steps but the programme really gets underway tomorrow with a full day of on-track evaluation for both Timo and Lucas.” Glock added that it was good to see the car in action and he really liked being back in a racing car.

Towards the end of last year, Bridgestone had to alter the two-step gap between the compounds and reduce it back to a single step because it was deemed dangerous at selected tracks. The tyre supplier has said that they are keeping the two-step gap where they can for 2010, although at Monaco and anywhere else necessary, they will continue with soft and super-soft for safety reasons. It also appears the green markings will continue.

Finally, long-range weather forecasts suggest that next week’s test in Jerez may face some weather issues, but who trusts the weathermen?

That’s all for now, I’ll be back on Monday with another F1 Minute.

Bridgestone Motorsport, the Official Tyre Supplier to the FIA Formula One World Championship, has completed the first group test of the exciting new 2010 season after three days at the 4.05 km Circuit Comunitat de la Valenciana, in Spain.

This was the first opportunity for teams, drivers and observers to see in action the final specification of the new narrow front Potenza F1 tyre developed by Bridgestone for this season. With a tyre size of 245/ 55R13, the new front tyre when fitted to a rim is 20mm narrower than the 2009 specification and is designed to redress the balance of the cars after grooves were removed from the tyres ahead of the 2009 season.

Bridgestone will again have four dry tyre compounds (Hard, Medium, Soft and Super Soft) to cover the 19 race calendar, with two selected per race weekend. Two of these four compound designations of 2010 dry tyre: the Soft and Super Soft; were available for use by the teams in Valencia this week, as well as the current specification intermediate and wet weather tyres.

Seven teams attended the test, which took place between 1-3 February, with sunny conditions and moderate winds prevailing over the course of the three day test.

Bridgestone’s Potenza Formula One tyres will next be seen in use in Jerez on February 10-13, where Bridgestone expects ten teams to be present, including Virgin Racing, the first of the four new F1 teams to break cover. This will be quickly followed by another four days of testing at Jerez from February 17-20, where Lotus Racing is also expected to join the group test. Along with the intermediate and wet weather tyres, the Medium will be the main dry compound available at both these Jerez tests, with teams also able to request the Hard and Soft compounds as additional options during both weeks.

Q&A with Tetsuro Kobayashi – Technical Manager, Bridgestone Motorsport:

Which specifications were brought to Valencia and why?
“We brought the Soft and Super Soft dry compound tyres to Valencia, along with our intermediate and wet weather specifications too. Valencia is a less severe track compared to some and although it has a slightly rough surface we are able to use our softer compounds here. One interesting factor at Valencia however is the front tyre graining caused by the lateral forces, which makes it a good track for us to evaluate the graining resistance of our front tyres. This is in contrast to the Jerez track, where teams will next test, which is much more severe, especially on the rear tyres. So we will be able to check our rear tyre performance more thoroughly next week.”

First test of the year with no fewer than seven teams: what was learnt from this test?
“First of all, we are pleased to have seen the good potential of the 2010 specifications, even though it’s a little difficult to judge fully the true performance because of the special characteristics of the Valencia circuit. So far though, our tyre performance is in line with our expectations. We are expecting to learn more about rear tyre behaviour at the next consecutive Jerez tests where the rough tarmac and severe layout will provide a good testing opportunity for the Bridgestone rear tyres.”

The next two tests will be at Jerez. Which specifications will be seen there?
“The Medium compound will be supplied as the prime compound for both of the tests and the Hard and Soft compounds will be available during both week one and week two as option compounds.”

Why has Bridgestone only now developed the narrow front?
“The decision to change from grooved to slick tyres ahead of the 2009 season meant that the front tyres gained proportionately more contact surface area in comparison to the rear tyres. This in turn gave the fronts more grip than was ideally required. However, at the request of the teams, who had already designed their 2009 cars based on the previous sized fronts, we delayed the introduction of the narrow front until 2010.”

How much more narrow is the new front and did the teams have to do anything in particular to accommodate it?

“It is actually 20mm more narrow (including wheel width) than the 2009 specification (2010 front tyre size: 245/55 R13) and it enables the cars to be better balanced from front to rear. From the teams’ perspectives, they should have taken these new fronts into consideration when designing their 2010 cars and they were asked in particular to consider designing the cars with more rear carrying load in order to get the best out of the tyres.”What other changes has Bridgestone made to the tyres ahead of this season?
“Of course, being a new sized front, the front construction has been slightly modified but the other main change this year has been a change to the rear tyre construction in order to increase its durability. There has also been some modification of the tyre compounds in order to manage the expected longer stint lengths and to provide quicker warm up times in comparison to our 2009 compound range.”

How much work is involved from Bridgestone’s perspective in designing, developing and manufacturing new tyre specifications?
“There is a great deal of effort required when designing and introducing new tyre specifications. Firstly, it is vital that the tyres are safe and of a high quality. They must also be capable of doing the job they have been designed for. Our tyre designers and engineers at our Technical Centre in Kodaira City, Tokyo, Japan, were extremely busy last year working on the prototypes and ensuring that the final specifications met the stringent quality and performance tests at our indoor testing facility. Only when tyres pass these tests on the rigs are they allowed to be run on the cars. It has to be said that the teams have also played an important part in this process as their simulation data is vital in ensuring that we are placing the tyres under the right amounts and types of loading. It is very much a collaborative process and we now look forward to seeing the tyres in action on the race tracks.”

Does the no refuelling rule and anticipated longer stint lengths place the tyres under added stresses?
“Certainly, with the cars being potentially 100kgs heavier this year at the start of the races than last year, the longer stint lengths with greater amounts of fuel will place additional loads on t he tyres but our 2010 casing should be much more durable in comparison to the 2009 casing: the strengthened rear construction in particular; will help the cars accommodate this new rule. We will also keep monitoring and analysing the data very carefully at the coming winter tests and races because the downforce created by the 2010 cars will keep improving throughout the season. We have already noted that much higher downforces are being produced in comparison to last season.”

How will Bridgestone allocate the two types of dry tyre in 2010?
“Like 2009, Bridgestone intends to take two dry compounds which are a step allocation apart to most races: Hard and Soft or Medium and Super Soft for example. This will not be possible at some races however, such as Monaco, where it is important to have consecutive soft compounds to ensure maximum grip on the street circuit. The compound allocation will again be determined by Bridgestone, based on our experience of previous years and the data received from the teams.”

How many sets of tyres will drivers have available at race weekends?
“The number of sets of dry tyres to be made available in 2010 for each driver per race weekend has been reduced from 14 sets to 11 sets. These will consist of six sets of the “prime” tyre and five sets of the “option” tyre. Furthermore, we will provide four sets of intermediate tyre and three sets of wet tyre. This is welcome news from Bridgestone’s perspective as we will have additional teams to supply and provide tyre fitting services to this year and we thank the FIA and teams for their co-operation in this regard.”

How will the tyres be visually distinguishable from each other this season?
“We will mark the softer of the two compounds available at each race weekend with green bands on the outer edges of the sidewalls. We tested many different alternatives and this location gave the best visibility, from the side and also a head-on view. We have used the colour green as it shows our support of the FIA’s Make Cars Green campaign.”