Shinji Aoki Archives - Asphalt & Rubber

MotoGP

Friday Summary at Catalunya: Fast Suzukis, The Deceptive Pace of the Yamahas, & Tires and Electronics

By David Emmett 06/12/2015 3 Comments

What did we learn from Friday practice at Barcelona? We learned that things are not quite what they seem. Does the fact that the Repsol Honda riders are second and third overall mean that HRC’s travails are behind it? Certainly not.

Do the two Suzukis in the top five – and Aleix Espargaro setting the fastest overall time – mean Suzuki have found the horsepower to match the Honda and Ducati? Absolutely not.

Will the Yamaha’s lowly positions on the grid put them out of contention on Sunday? Leaving aside the fact that it’s just the first day of practice, with another full day on Saturday, definitely, absolutely, certainly not.

Are all these assumptions completely baseless? That’s where it gets interesting. In fact, there is a kernel of truth underlying them all.

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Racing

MotoGP: Bridgestone Denies Lorenzo’s Tire Accusations

By David Emmett 05/21/2013 13 Comments

As is customary, the Bridgestone media service issued their post-race debrief on tire performance on Tuesday, in which they discuss how the tires they selected held up during the race at Le Mans the previous weekend. This week’s press release is more interesting than most, as it contains a denial from Bridgestone that there was anything wrong with the rear tire used by Jorge Lorenzo in the race on Sunday, countering claims that his tire was defective.

Speaking to the media after the race on Sunday, Lorenzo said that although he was not a tire engineer, he could think of no other explanation but a defective tire for the complete lack of rear grip he had suffered throughout the race. The setting they had used in the wet morning warm-up had worked well, Lorenzo said. In 2012, under similar conditions, he had not had a single problem, he explained, going on to win the race by nearly 10 seconds.

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Racing

MotoGP: About Bridgestone’s Tire Failures at Assen

By David Emmett 07/09/2012 6 Comments

The tire problems experienced by Valentino Rossi and Ben Spies at Assen, where great chunks of rubber came off the right side of the rear of the tire, slowing Spies up severely and affecting Rossi so badly he was forced to pit for a new tire, have been the subject of much speculation and discussion since the event. Spies was particularly shaken after the race, the tire problems bringing back bad memories of the 300 km/h tire failure and monster crash he had at Daytona back in 2003, which he still has the scars to show from.

Nearly a week on, and after examination by Bridgestone technicians back at the factory in Japan, we can start to draw a few preliminary conclusions as to the cause of the problems. Bridgestone have issued a press release and briefed the press directly, and the riders have weighed in with their thoughts and impressions of what happened. Before pointing fingers and apportioning blame, let us first walk through what we know of what actually happened.

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