It's all a guessing game at this point until you actually mix some in and we see logs to assist you.
One particular car can run E60 w/o a flash mix while another one can only run E30, the variance is pretty substantially on these cars.
'15 IS350 F-sport Ultra White/Rioja Red
'09 E90 M3 7-DCT Interlagos Blue/Novillo Silver
[MS Pullies|K&N drop-in|Test Pipes |Evolve Stage II tune|Evolve Servotronic Map|Evolve M3 GTS-DCT file]