Augusto Farfus set the best time of Saturday's first World Touring Car free practice session at Okayama as BMW set the pace.
SEAT's Yvan Muller had been quickest in Friday's test session, but Farfus and fellow BMW driver Andy Priaulx lapped nearly a second faster than yesterday's benchmark to sweep the first two places for the German manufacturer.
The majority of the drivers set their best times early in the session - Farfus's best coming on just his second flying lap - before turning their attention to race set-up for the remainder of the half hour.
Jordi Gene, Muller and Tiago Monteiro were third, fourth and fifth in their SEATs, ahead of the works BMW of Jorg Muller and the lead independent runner, Felix Porteiro.
The SEATs of Rickard Rydell and championship leader Gabriele Tarquini were eighth and ninth fastest, with Alex Zanardi completing the top 10, ahead of independent championship leader Tom Coronel.
Super GT veteran Norbertu Taniguchi was the fastest of the guest drivers this morning in 12th place, with Seiji Ara 17th, Joao Paulo de Oliveira 20th, Michael Ho 25th and Masaki Kano 26th.
Chevrolet was somewhat off the pace with Nicola Larini, Rob Huff and Alain Menu 13th, 14th and 16th. James Thompson was the best of the Ladas in 18th place.
The session's only stoppage came 12 minutes in when Stefano D'Aste's independent BMW went off on his first flying lap.
Times to follow