Sylvain Guintoli

One of the big talking points from last week's Sepang MotoGP test was the performance of the new Michelin rear tire. The new construction tire, first tested at the Barcelona test in June 2019, met with widespread praise. The new rear had more grip, both on the edge of the tire, and in the traction area, the slightly fatter part of the tire which riders use just as they pick up the bike on exit.

The new tire was popular with everyone, although some riders believed it benefited the bikes which use a lot of corner speed, like Yamaha and Suzuki, more than the point-and-squirt bikes like the Honda and Ducati. Riders who carried a lot of corner speed could immediately use the additional edge grip. Riders who needed to pick up the bike and drive out of corners felt they needed more time to understand how to get the most out of the tire.

Point

The Yamaha riders were overwhelmingly positive about the new rear Michelin. "Since the first lap I did on those tires in Montmelo last year, I felt really good," Maverick Viñales said. "Also for the way I pick up the bike, it's quite good."

Monster Energy Yamaha teammate Valentino Rossi agreed, but pointed out that the new Michelins benefited everybody. "The tires from Michelin are better," the Italian said. "This is good but unfortunately the tire from Michelin are for everybody. So we make the step but also the other guys."

Franco Morbidelli described the tire as filling in the holes where the Yamaha lacked drive and grip in 2019. "The new tire gives more grip and it fills our emptiness with grip that we had last year, so that's positive for us. This tire performs better so edge grip and drive grip."

As the MotoGP field gets closer, the value of a good test rider goes up. The closer a rider can get to the limits of the bike, the more data they generate, and the more the factories learn. That means there is a premium now on genuinely fast riders, as the data gathered when a rider is within a few tenths of the MotoGP elite is exponentially more valuable than the data obtained by riders who are a second off the pace.

As a result, top racers who have missed the boat for one reason or another are in high demand among MotoGP's factories. In the second part of our series on the importance of test riders, we take a look at Suzuki. (You can read the first part, with KTM's Mike Leitner, here). I spoke to Suzuki Ecstar team boss Davide Brivio at the Jerez test last November, to ask about the importance of Sylvain Guintoli, the former MotoGP, WorldSBK, and BSB racer who Suzuki have been using to help push forward the development of the GSX-RR over the past year or so. With some success: so far, Suzuki have three podiums from four races, and are clearly competitive with Yamaha, Honda, and Ducati.

Given that a test rider needs to be able to clearly describe what they are feeling on the bike, as well as be fast enough to feel something useful, I started off asking Brivio what he more, a fast rider or an intelligent rider. "I would say it should be a good compromise, but probably an intelligent test rider is important as well. Let's say fast enough!" Brivio laughed. "It's always difficult to say whether a test rider can be 1 second slower or three seconds slower. But for me, we think it's very important that he understands whether something is better or not and he can describe properly why it's better or why it's worse. Then of course everything has to be confirmed by the factory riders. But it's very important that he's intelligent and also expert enough about what he is testing, he has enough experience with the electronics, with the tires, with the chassis."

It is not often that journalists get to speak to team managers at length, but test days provide the perfect opportunity to do just that. So it was that a small group of journalists attending the tests sat down with Suzuki team boss Davide Brivio to discuss progress so far.

There was a lot to talk about. There have been rumors that Andrea Iannone is not fitting in well with the ECSTAR Suzuki team, and is currently engaged in talks with Aprilia about moving there for the 2018 season. Some of Iannone's issues are down to his problem adapting to the bike, and trying to fix his feeling with the front end.

Brivio spoke to us about Iannone's situation, and the development of the GSX-RR. He also talked about the benefits of a satellite team, what Suzuki is doing to improve the spec electronics package, the test program at Barcelona, and the return of Alex Rins for the test. It was a long discussion, but there was plenty to go over.

Question: How did you hear these rumors about Andrea talking with Aprilia and some people say that there is no very good climate in the garage? How is your reaction on this?

Davide Brivio: I heard through journalists and I read on a website. Of course, I heard this, but the situation is very simple and very clear. We have two years’ agreement with Andrea Iannone and I don’t think the atmosphere is strange at all. Of course, we are having a difficult moment, a difficult time because we don’t get results. We just keep working and try to follow Andrea, he has some, let’s say, requests. He has some problem riding this bike, which is not only Andrea, also Sylvain Guintoli in these races. He felt some problems, which is we should improve the rear grip. This looks like the same for everybody probably. It’s quite a common problem.