Tost happy with challenge posed by 2017 Pirelli F1 tires

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Toro Rosso Formula 1 chief Franz Tost sees no issue with the tires that Pirelli has supplied to the sport for the 2017 season, believing they pose a good challenge.

Pirelli revised its tire compounds for 2017 as part of a shake-up of F1’s technical regulations, making them more durable so that drivers could push them harder.

Teams have managed the new challenge with varying levels of success. While Ferrari has been particularly prolific on the softer compounds, Mercedes has struggled, with its failure to finish on the podium in Monaco being attributed to its ultra-soft tire woes.

Speaking over the Monaco weekend, Tost said that while Pirelli’s tires were proving a challenge for the drivers and engineers to understand, this was no bad thing.

“The tires are a challenge, to understand them, how they work,” Tost said.

“But it’s good for the engineers as well as for the drivers to find out in which window they can get their earliest peak and they can get the most out of it.

“In motorsports, they have to understand the tire because it’s a performance differentiator and therefore I can only say positive [things] about Pirelli.

“In my opinion they do a good job and today I saw the same for all the teams and we have to find the best possible solution and get the most out of it.

“And there are always complaints; either they are too soft or they are too hard or this or that. Forget it, they should sit in the car and should push. That’s it.”

Cadillac, Acura battle for top speed as cars back on track for Rolex 24 at Daytona practice

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DAYTONA BEACH, Fla. – The new hybrid prototypes of Cadillac and Acura battled atop the speed chart as practice resumed Thursday for the Rolex 24 at Daytona.

Chip Ganassi Racing driver Richard Westbrook was fastest Thursday afternoon in the No. 02 Cadillac V-LMDh with a 1-minute, 35.185-second lap around the 12-turn, 3.56-mile road course at Daytona International Speedway.

That pace topped Ricky Taylor’s 1:35.366 lap that topped the Thursday morning session that marked the first time the IMSA WeatherTech SportsCar Championship was back on track since qualifying Sunday afternoon that concluded the four-day Roar Before The Rolex 24 test.

Punctuated by Tom Blomqvist’s pole position for defending race winner Meyer Shank Racing, the Acura ARX-06s had been fastest for much of the Roar and led four consecutive practice sessions.

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But the times have been extremely tight in the new Grand Touring Prototype (GTP) category that has brought hybrid engines to IMSA’s premier class. Only 0.9 seconds separated the nine LMDh cars in GTP in qualifying, and though the spread slightly widened to 1.378 seconds in Thursday’s practices with teams on varying strategies and preparation, Westbrook still pooh-poohed the importance of speeds.

“It’s always nice to be at the top, but I don’t think it means too much or read too much into it” Westbrook said. “Big fuel tanks in the GTP class this year, so you have no idea what fuel levels people are running. We had a good run, and the car is really enjoyable to drive now. I definitely wasn’t saying that a month ago.

“It really does feel good now. We are working on performance and definitely unlocking some potential, and it just gives us more confidence going into the race. It’s going to be super tight. Everyone’s got the same power, everyone has the same downforce, everyone has the same drag levels and let’s just go race.”

Because teams have put such a premium on reliability, handling mostly has suffered in the GTPs, but Westbrook said the tide had turned Thursday.

“These cars are so competitive, and you were just running it for the sake of running it in the beginning, and there’s so much going on, you don’t really have time to work on performance,” he said. “A lot of emphasis was on durability in the beginning, and rightly so, but now finally we can work on performance, and that’s the same for other manufacturers as well. But we’re worrying about ourselves and improving every run, and I think everybody’s pretty happy with their Cadillac right now.”

Mike Shank, co-owner of Blomqvist’s No. 60 on the pole, said his team still was facing reliability problems despite its speed.

“We address them literally every hour,” Shank said. “We’re addressing some little thing we’re doing better to try to make it last. And also we’re talking about how we race the race, which will be different from years past.

“Just think about every system in the car, I’m not going to say which ones we’re working on, but there are systems in the car that ORECA and HPD are continually trying to improve. By the way, sometimes we put them on the car and take them off before it even goes out on the track because something didn’t work with electronics. There’s so much programming. So many departments have to talk to each other. That bridge gets broken from a code not being totally correct, and the car won’t run. Or the power steering turns off.”

Former Rolex 24 winner Renger van der Zande of Ganassi said it still is a waiting game until the 24-hour race begins Saturday shortly after 1:30 p.m.

“I think the performance of the car is good,” van der Zande said. “No drama. We’re chipping away on setup step by step and the team is in control. It’s crazy out there what people do on the track at the moment. It’s about staying cool and peak at the right moment, and it’s not the right moment yet for that. We’ll keep digging.”


PRACTICE RESULTS:

Click here for Session I (by class)

Click here for Session II (by class)

Combined speeds