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
From Max Verstappen's early crash to various other spins and stops, that was a pretty eventful second practice session. You can read about it all in Andrew Benson's report here.
We are pretty much done here so all that is really left for me to say is join us on Saturday at 15:30 GMT for final practice, followed by qualifying.
See you then.
Lewis Hamilton flew to LA, did a bit of wrestling and partied after winning his third world title, but he arrived in Mexico this week having not spoken to Nico Rosberg about their first-corner clash at the US GP.
He has since said, external he does not plan to help his team-mate finish second.
David Coulthard believes the friendship between Hamilton and Rosberg has "spectacularly" broken down during their time together at Mercedes.
See what Coulthard has to say in full on the matter here.
How many titles can Hamilton win?
Nico Rosberg finishes fastest in second practice then, but the Red Bulls are not far behind.
Daniil Kvyat, in second, was just two tenths of a second off Rosberg's best time, with Daniel Ricciardo three tenths of a second off.
Image source, _
Image source, _
Nico Rosberg (1:21.531) finishes fastest in second practice for the Mexican Grand Prix.
Image source, Getty Images"Tyres are already destroyed," Valtteri Bottas, on inters, reports. Fernando Alonso has had enough, bringing his McLaren back to the pits and climbing out.
One minute remaining...
How many more titles will Hamilton win?
Fernando Alonso pops back out with intermediate tyres on for the final few minutes of the session. Lewis Hamilton has done likewise, as has Felipe Massa, who is told he has enough time for three more timed laps.
Eight minutes to go in second practice and the umbrellas are going up in the stands. Carlos Sainz locks up and goes straight on at the first corner, prompting other drivers to take it easy as the conditions change.
Image source, Getty ImagesHow many titles can Hamilton win?
We've been asking throughout practice how many titles you think Lewis Hamilton can go on to win after claiming his third on Sunday.
Keep them coming to #bbcf1,, external text in on 81111 (UK only) and post them on the BBC Sport Facebook page.
Jenson Button is informed that rain is still expected to arrive before the end of the session, with Turn 6 the first corner expected to get wet.
Button, meanwhile, is ninth fastest with 1:23.109, three tenths of a second slower than Fernando Alonso in eighth.
Some spots of rain on the cameras. Meanwhile, in Austin...
Image source, _With 15 minutes left, it looks like Nico Rosberg is likely to end FP2 with the fastest time (1:21.531), with the drivers embarking on their long-run practice at the moment.