Darkness had fully set in by the time the premier class got their last low pressure run of the weekend going. With Marc Marquez keeping busy in the gravel trap on a less than ideal hard front tyre, the Ducatis were out to play on softer rubber and claiming the top of the timesheets with a string of low 1:55s for Danilo Petrucci and Andrea Dovizioso. Ducati’s new boy was particularly enjoying the cooler conditions on all softs and threw in the most 1:54 times of the session but Dovizioso was not too far behind on mediums. Maverick Vinales wanted a part in the play as well and topped off a consistent run in the mid 1:55s with a 1:54 on fairly used rubber, bringing the top three riders within eight hundredths of a second.
Jack Miller mingled with the factory bikes as well, aided somewhat by chasing Marquez on a fast lap and finished fourth, although a bit off the leading trio’s pace. Fabio Quartararo is making a habit of being the second best Yamaha, this time in fifth position, under three tenths slower than Vinales. Despite torturing that hard front tyre into an early crash, Marquez stuck to his choice, matched it with a soft rear for the final ten minutes and calmed down his horses to have a quiet end to practice in sixth position – four tenths down on the leader and not quite as impressive on race pace.
Joan Mir was half a second off Petrucci but had a quiet session into the top seven, which could not be said of his teammate. Takaaki Nakagami and Aleix Espargaro were also persistent presences in the top positions, finishing eighth and ninth in FP4. Despite initially being tipped as a race favourite, Alex Rins added a third crash of the weekend in turn two and rounded out the top ten with a set of mid 1:55s, in an attempt to regain confidence.
With the top 14 riders within a second of the leader, two men who missed that cut-off were Jorge Lorenzo and Valentino Rossi. The Spaniard had a cautious return to action after his nasty FP3 highside, while the Italian was the last Yamaha in the standings once more, struggling to even get into the 1:55s on medium tyres.