2015 F1 Round 16 United States Grand Prix FP1 – Rosberg leads the Red Bulls in wet conditions

First practice for the 2015 United States Grand Prix took place on a wet Austin circuit on October 23. Rosberg was fastest with a 1:53.989, with Kvyat second, 1.235 seconds behind, and Ricciardo third.

Rain had fallen before practice began, and the track remained wet throughout, although intermediate tyres could still be used. Ericsson was first to explore the conditions and became the first driver to record a lap time.

After heading out, Rosberg initially took the lead with a 1:55.102. Hamilton briefly moved into second before the two Red Bulls pushed him back down the order.

Kvyat and Ricciardo successively improved their times, but Rosberg’s eventual 1:53.989 remained the fastest lap at the end. The Red Bulls finished second and third.

Sainz was fourth. Hamilton completed only four laps but still finished fifth, ahead of Vettel in sixth, Verstappen in seventh and Räikkönen in eighth.

Alonso was ninth in a McLaren fitted with an upgraded power unit, with Bottas tenth and Massa 11th. Button was 13th.

Marciello replaced Nasr for this session, completing 19 laps in the Sauber and finishing 16th. Home driver Rossi was 18th for Marussia.

Maldonado’s Lotus kept slipping into neutral after he left the pits. The gearbox problem prevented him from recording a valid lap time.