With eight right-hand corners, most of which are long and fast, and only five left-handers, most of which are much slower, the Circuit de Catalunya provides a worthy puzzle for all the tire manufacturers, but this weekend Bridgestone has a secret weapon up its sleeve. For the Catalan GP, Bridgestone has made a special asymmetrical tire that will be composed of different compounds on each side of the tire in order to meet the demanding conditions of the Spanish track.
You may remember that a month ago, Dani Pedrosa suffered a tire failure while racing at the Japanese GP at Motegi. While still able to stay in the race, fans watched as the Spainard began slowing down, unable to challenge the Fiat Yamahas any further. Pedrosa would finish 3rd for the day, but some serious questions and concerns were being asked of Bridgestone, the sole tire provider of the series.
Bridgestone has now confirmed that faulty construction of the tire allowed a foreign element to be embedded in the rubber, which later broke out, taking chunks of rubber with it.
At Monza this week, Pirelli will be debuting a new qualifying tire solution for the World Superbike Championship. Taking a page from what Bridgestone is doing in MotoGP, the 200mm qualifying tire will include markers that will help indicate what tires are being selected during the Superpole competition. Pirelli tires will sport non-permanent white “long P” markings and yellow lines, which have been imprinted on to the tire’s surface. These markings will offer spectators and presenters a way of identifying what is happening during the Superpole in regards to tire choices.
Editor’s note: The colored rims are only for non-competetive sessions such as the Free Practice sessions, and for Qualifying or Racing.
Bridgestone, the now sole provider of tires for the MotoGP series, is taking a cue from from Formula 1 and coloring the rims of MotoGP bikes to indicate the tire compound the rider has selected. Like in Formula 1, green will be used for riders using the soft compound, and red for riders using the hard compound.
For now, this is purely for the enjoyment of TV viewers, but there is speculation that color codes could lead to abuse by teams looking to inject a little disinformation into their rival teams. We imagine safeguards similar to those in Formula 1 will be put in place, and that the coloring scheme will play into MotoGP racing as it has in the pinnacle of auto racing.
Source: Two Wheels Blog
Bridgestone race tire manager Tohru Ubukata has issued an official apology to Dani Pedrosa and the Repsol Honda Team for the condition of Pedrosa’s front tire during the Japanese GP at Motegi. As you can see in the photo, Pedrosa came back into the pits after the race with chunks of rubber missing from the tire carcass. Bridgestone has promised to carry out a full investigation to find out why the tire was missing pieces at the the end of the Motegi GP.
According to Ubukata, no other riders or tires were affected with a similar malfunction, which makes this an unfortunate incident for Pedrosa:
“We did see some problems with Dani Pedrosa’s medium compound front Bridgestone tire after the race. All the other tires that were used during the weekend, and this season, performed well so we can say this is a problem isolated to just this one tire, but of course we have already taken the tire to our technical center in Tokyo where we are investigating the problem in detail.”
Pedrosa could very well owe his 3rd place finish to that tire malfunction, being unable to pass Rossi after several opportunities. Its a good thing the official track car of MotoGP isn’t a Ford Explorer.
Pirelli’s Cyber Tire will provide real-time tire performance information via a chip/transponder setup embedded in the tire tread. The system will send and store a myriad of information such as: operating temperature, pressure, road conditions, and vertical load. The system will work in conjunction with another Pirelli invention, the Cyber Wheel, which will convey wheel information such as hub loads in a similar fashion. While the naming is gruesome, the potential for data logging and analysis could be extremely useful to racing and enthusiasts.
Pirelli has also partnered with Brembo and Magnetti Marelli on the Cyber Tire project. While details are not certain, we’d suspect the partnership would mean a system that quickly transfers information from the tire to the driver, car, and brakes, and allows for more informed and instantaneous performance changes based on driving conditions.
The technology’s use is centered around automobiles, but the mechanics and application could easily be carried-over into motorcycles. Just don’t hold you breath on seeing it soon though. The car version is expected in 2010, with no details on whether there will be a motorcycle version. As we are all well aware, motorcycle tires already cost considerably more than car/truck tires, and last an even shorter amount of time. Presumably the decreased longevity and added costs of the Cyber Tire/Cyber Wheel system would make the technology a bit harder to justify cost-wise in a motorcycle application outside of racing.
Michelin is set to retire the tried and true track-oriented Power Race with the new Power One tire. Details are still thin, since the tire will be officially released to the world in March, but we do know that the One is the result of three years of work, more than 35,000 track laps, and will come in slick and treaded form. Michelin reports that it uses eight new technical solutions in the manufacturing of the Power one, including a new compound housing.
Expect the tire to come in three different compounds: A (soft), B (medium), and C (endurance). Slicks will be immediately available in 16,5” and in 17″ form in 2010. There is also talk of a rain and supermotard version of the tire.
Bridgestone has finally signed the agreement with Dorna Sports making it the only tire supplier for MotoGP for the next three seasons. Last season saw for Michelin dwindle as Bridgestone became the favorite shoe in the paddock, so much so that Dani Pedrosa jumped ship mid-season, leaving teammate Nicky Hayden behind who was not given the same option to switch to Bridgestone. The agreement comes about as Dorna tries to further reduce cost and make closer wheel-to-wheel racing. Continue reading for more.