Postpublished at 20:15
Jenson Button, by the way, has at least a 20-place grid penalty to serve this weekend for two engines, which could increase to 50, external, meaning he will start Sunday's race in Austin...
Summary
Rosberg fastest in second practice, Hamilton fourth
Bottas suffers high-speed crash, Hamilton spins, Grosjean out
Verstappen crashes on first lap after being fastest in first practice
Slippery new track surface causing problems for drivers
Rosberg's rear brakes catch fire in FP1
Postpublished at 20:15
Postpublished at 20:13 Greenwich Mean Time 30 October 2015
Jennie Gow
BBC Radio 5 live pit-lane reporter"Jenson Button's car is currently still up on its stilts. they are trying to fire it up again before they put the floor back on the car. Hopefully he can get out soon."
Go! Go! Go!published at 20:13
Green flag and we resume with one hour and 17 minutes remaining for the drivers to learn as much of the circuit as they can.
Image source, Getty ImagesPostpublished at 20:10
Before that crash there were a few early times cropping up on the board, with Kimi Raikkonen leading the way with 1:25.820 ahead of Fernando Alonso (1:25.850) and Marcus Ericsson (1:27.365).
Postpublished at 20:08
Max Verstappen climbs onto the back of a scooter and is driven past the hospitality areas and back to the paddock as the recovery truck arrives on scene to deal with the Toro Rosso.
Postpublished at 20:08 Greenwich Mean Time 30 October 2015
Postpublished at 20:07
Oh dear. Pushing a little too early? Max Verstappen, fastest in FP1, loses the rear of his Toro Rosso heading into Turn 16 and smacks side on into the barrier.
"I crashed. Sorry," he says before climbing out of his car to asses the damage, his front left tyre twisted round the wrong way.
Red flagpublished at 20:05
We've got a red flag and it is for Max Verstappen's Toro Rosso...
Image source, Getty ImagesMansell on Mansellpublished at 20:02 Greenwich Mean Time 30 October 2015
Go! Go! Go!published at 20:01
The track is open and second practice is under way. Marcus Ericsson is the first man to burst out of the pits and onto the circuit.
Image source, Getty ImagesPostpublished at 20:01 Greenwich Mean Time 30 October 2015
Postpublished at 20:00 Greenwich Mean Time 30 October 2015
BBC coveragepublished at 19:59
BBC Radio 5 Live Sports ExtraRight then, almost go time. You can enhance your second-practice following experience by tuning into BBC Radio 5 live sports extra - either online or on the radio - right now.
How many titles can Hamilton win?published at 19:56 Greenwich Mean Time 30 October 2015
Get involved #bbcf1
Manors bosses to quitpublished at 19:53 Greenwich Mean Time 30 October 2015
Andrew Benson
Chief F1 writer
Image source, Getty Images"Manor Formula 1 bosses John Booth and Graeme Lowdon are set to quit the team at the end of the season.
"Booth, the team principal, and Lowdon, the president and sporting director, have run the team since its debut as Virgin Racing in 2010.
"Both men refused to comment on their prospective departures, which have been confirmed by sources close to the team."
Gutierrez set for Haas drivepublished at 19:51
Image source, Getty ImagesFirst up, the worst-kept secret in F1 is out, with Sauber driver Esteban Gutierrez set to be named as the second driver for the new US-based Haas team.
The Mexican, 24, will join Franco-Swiss Romain Grosjean in the team, who will make their debut in 2016.
Postpublished at 19:51
OK, 90 minutes of second practice gets under way in just under 10 minutes but before it does, I'll quickly bring you up to date with some news from around F1 with the help of our chief F1 writer Andrew Benson...
How far can he go?published at 19:49 Greenwich Mean Time 30 October 2015
Get involved #bbcf1
Image source, Getty ImagesLewis Hamilton bagged world title number three on Sunday and, at just 30, you'd think he still has plenty left in the tank.
Nigel Mansell thinks he can get close to Michael Schumacher's record seven titles, but what do you think? Can he win more? Will Nico Rosberg win a title? Or has he now missed the best chance he will get?
Let us know via #bbcf1,, external text in on 81111 (UK only) and have your say on the BBC Sport Facebook page.
The need for speedpublished at 19:44
Image source, Getty ImagesAt higher altitude the air is less dense, meaning the cars are subjected to less drag. As a result, they are going very fast. Very fast indeed.
In first practice, F1 cars reached their highest top speeds of the season as Lewis Hamilton broke the the 360 km/h (223 mph) barrier.
Postpublished at 19:43 Greenwich Mean Time 30 October 2015
Tom Clarkson
BBC F1 pit-lane reporter"Fascinating first practice in Mexico. Lack of grip the biggest complaint from drivers; now thought unlikely to equal pole simulations of 1m19s."