Pirelli bringing experimental hard tire to Silverstone again

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Pirelli will bring their prototype new hard tire for teams to use in practice for this weekend’s British Grand Prix at Silverstone.

Teams did a limited amount of running on the tire in practice in Canada. The revised construction is aimed to prevent a repeat of the tire delaminations seen at some earlier races.

However Pirelli does not yet have the unanimous agreement it requires from teams to use the new tires in a race.

F1’s official tire supplier is bringing its hardest compounds to this weekend’s race and using a new bonding process to guard against delaminations.

“We’ve brought the two hardest compounds to the British Grand Prix,” said Pirelli motorsport director Paul Hembery, “with a new bonding process connecting the tread to the steel belt, which is designed to eliminate the isolated delamination issues to reach a unanimous agreement about this.”

“However, we do still have that possibility on stand-by should it be required in future. During free practice at Silverstone we will have the same prototype hard seen earlier this season.

“The actual construction of the tire won’t change, as the teams weren’t able tire available that we tried out on Friday in Spain, aimed at even greater durability than our current hard. This is in order to give the teams the chance to test this new compound on a different track to collect more data.”

Newgarden fastest as Castroneves returns in weather-shortened Barber test

Photo: IndyCar
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The Verizon IndyCar Series took to Barber Motorsports Park on Tuesday for an open test, with 24 entries tackling the 2.38-mile road course.

Weather intervened in the afternoon, preventing nearly the entire field from going out, but the weather held off during the morning enough for one session to be run in its entirety.

Team Penske’s Josef Newgarden led the way, with a quick lap of 1:07.979, ahead of Team Penske teammates Will Power and Helio Castroneves. For Castroneves, this marked his first IndyCar outing of 2018.

Helio Castroneves was back in an IndyCar on Tuesday at Barber Motorsports Park. Photo: IndyCar

Sporting the Pennzoil “yellow submarine” paint scheme, Castroneves turned 41 laps around Barber in the morning session, with a quick lap of 1:08.315. He was also the only driver to venture out on track in the afternoon, completing eight laps.

The Dale Coyne Racing duo of Sebastien Bourdais and Zachary Claman De Melo completed the top five.

Results are below.