GP USA Prove libere venerdì–20/10/2017
Lewis Hamilton fastest again in second practice for F1’s US GP
Lewis Hamilton completed a clean sweep of Formula 1 Friday practice ahead of the United States Grand Prix by setting the pace in the second session.
The Mercedes F1 driver, who also topped the morning session, outpaced Red Bull driver Max Verstappen by 0.397s to secure top spot with a best lap of 1m34.668s.
Hamilton was only third fastest after the early runs. During that phase, Daniel Ricciardo used super-softs to set the pace ahead of Verstappen, who like Hamilton used softs early on.
Hamilton had a brief off-track moment at the penultimate corner during that run, but made no mistake when he returned to the track on ultra-softs as he went quickest after 35 minutes.
By that stage, Valtteri Bottas had already knocked Ricciardo off top spot, but Mercedes driver Bottas ultimately had to settle for fourth fastest, just under a tenth slower than Ferrari’s Sebastian Vettel.
Vettel survived a spin into the gravel shortly before the 20-minute mark, when the rear snapped away on turn-in to the penultimate corner.
Vettel was able to dig himself out and recover to the pits, before returning for his performance run shortly before the halfway mark of the 90-minute session.
He later complained of a potential problem with the front axle, which he described as feeling "a bit like jelly", contributing to him completing only 11 laps.
Red Bull’s Ricciardo improved his first-run time by almost seven-tenths after switching to the ultra-softs, but it was only good enough for fifth, ahead of the second Ferrari of Kimi Raikkonen.
Fernando Alonso’s McLaren-Honda was best-of-the rest in seventh, having briefly been as high as fourth thanks to putting in his quick lap in earlier than most.
Williams driver Felipe Massa was eighth, with Force India pairing Sergio Perez and Esteban Ocon rounding out the top 10 – with the trio separated by just three-hundredths of a second.
Renault debutant Carlos Sainz Jr was the penultimate driver to complete his performance run on ultra-softs, taking 11th shortly before the one-hour mark.
The last driver to do so was team-mate Nico Hulkenberg, who suffered an engine glitch that kept him in the garage after his first run and only posted his time just inside the final 20 minutes.
Daniil Kvyat, who sat out the first session to allow Sean Gelael some mileage despite this being the Russian’s first time in the Toro Rosso since September’s Singapore Grand Prix, was 13th fastest.
Kevin Magnussen, who had a high-speed spin early in the session, was the best of the Haas-Ferraris in 14th.
Stoffel Vandoorne and Lance Stroll were 15th and 16th, ahead of F1 debutant Brendon Hartley, who improved several times on his ultra-softs to end his first day in grand prix racing 17th fastest.
Pascal Wehrlein missed the first session, with Charles Leclerc taking his Sauber seat, but recovered well to post the 18th-fastest time, ahead of team-mate Marcus Ericsson and Romain Grosjean’s Haas.
|2||Max Verstappen||Red Bull/Renault||1m35.065s||0.397s||30|
|5||Daniel Ricciardo||Red Bull/Renault||1m35.463s||0.795s||24|
|9||Sergio Perez||Force India/Mercedes||1m36.481s||1.813s||28|
|10||Esteban Ocon||Force India/Mercedes||1m36.490s||1.822s||34|
|13||Daniil Kvyat||Toro Rosso/Renault||1m36.761s||2.093s||40|
|17||Brendon Hartley||Toro Rosso/Renault||1m37.987s||3.319s||41|
Lewis Hamilton fastest in first practice for Formula 1’s US GP
Lewis Hamilton beat Formula 1 world championship rival Sebastian Vettel to the fastest time in first practice for the United States Grand Prix, in mixed conditions.
Mercedes F1 driver Hamilton clocked a 1m36.335s on the super-soft Pirelli compound tyres, 0.593 seconds clear of Ferrari’s Vettel with Valtteri Bottas half a tenth further back in third.
Early morning rain subsided before the start of the session, but the majority of the field headed out on the intermediate tyres for installation laps.
Hamilton set the early pace on the green-walled rubber, with a 1m50.146s, but that was usurped by Max Verstappen when the Red Bull driver fitted a fresh set of the same rubber.
Verstappen’s team-mate Daniel Ricciardo was caught out when he ran wide out of the final part of the high-speed esses and lost the car on the kerbs, before catching it and continuing.
Felipe Massa then went quickest on the intermediates, before Sebastian Vettel became the first driver to try dry tyres, running a set of super-softs and going quickest with a 1m45.960s lap.
After a lull in the running, Ricciardo broke the silence and posted a flurry of quick laps to break the 1m40-barrier, his best being a 1m39.366s on the super-softs.
Verstappen demoted him briefly, before Hamilton sets his first time on dry weather tyres with a 1m36.935s to move to the top of the pile.
Hamilton improved again with a 1m36.335s to cement his place at the top of the timesheet, with his time unchallenged for the remainder of the 90-minute session.
Verstappen, whose Red Bull team announced he would stay with the team until the end of 2020 ahead of the session, was fourth quickest, one second off the pace.
Stoffel Vandoorne’s McLaren-Honda, running an upgraded engine, was fifth quickest on the ultra-softs, but his team-mate Fernando Alonso failed to set a timed lap and spent most of the session in the garage after the team discovered a hydraulic leak.
Massa ended up sixth in the leading Williams, with Kimi Raikkonen’s Ferrari seventh and Force India’s Esteban Ocon eighth.
Sergio Perez’s Force India and Carlos Sainz Jr, competing in his first session for Renault, rounded out the top 10.
Sainz was three quarters of a second clear of new team-mate Nico Hulkenberg, who will take grid penalties this weekend after Renault fitted an upgraded engine featuring 2018 development parts.
Brendon Hartley, who is set to start his debut grand prix from the back of the grid because of similar engine component changes, set the 14th fastest time, 2.932s off the pace.
The New Zealander was just under 1.2s quicker than Seal Gelael, who was running in the other Toro Rosso for this session in place of Daniil Kvyat.
Charles Leclerc replaced Pascal Wehrlein at Sauber for first practice, clocking the 19th quickest time, just under fourth tenths adrift of team-mate Marcus Ericsson.
|4||Max Verstappen||Red Bull/Renault||1m37.339s||1.004s||21|
|8||Esteban Ocon||Force India/Mercedes||1m37.808s||1.473s||25|
|9||Sergio Perez||Force India/Mercedes||1m37.861s||1.526s||20|
|14||Brendon Hartley||Toro Rosso/Renault||1m39.267s||2.932s||28|
|16||Daniel Ricciardo||Red Bull/Renault||1m39.366s||3.031s||14|
|17||Sean Gelael||Toro Rosso/Renault||1m40.406s||4.071s||25|