With the track temperatures skyrocketing throughout the final practice session, the tale of FP4 was one of riders gradually migrating towards the hard tyre. Marc Marquez had led the session from the start and showed his usual consistent pace before a minor slide through the gravel interrupted his run on lap five. While the Spaniard was dusting himself and his hard tires off, Andrea Iannone went fastest on mediums and held on to the lead until the checker flag.
The Italian was not the only Suzuki to demonstrate good speed, Alex Rins joining him in the top two soon after, three tenths down on his teammate. Behind them was the hard tyre brigade, led by Marquez, who recovered from his crash to post a set of low 1:39s on used tires. The world champion was closely followed (in both ranking and pace) by teammate Dani Pedrosa, who steadily climbed his way through the order after uncharacteristically switching to a hard tyre combination.
That tire choice was not that much of a surprise from Cal Crutchlow in fifth position, although it was a novelty for Andrea Dovizioso in sixth spot. Seven tenths down on the leader was Tito Rabat in seventh position, ahead of Danilo Petrucci.
Maverick Viñales was over eight tenths slower than Iannone throughout the heatwave, with Pol Espargaro completing the top ten as the last man within a second of the leader.
The likes of Jorge Lorenzo in 11th, Valentino Rossi in 14th and Johann Zarco in 16th struggled to drop their pace anywhere near the low 1:39s coming from the frontrunners.