ah so this confirms it then, pre 06/2017 models have a 3.08 while post have a 2.81. Dan told me that there was no wavetrac option for the 3.08 due to it being a 205mm unit and wavetrac doesn't make one for that sizing which is true. I wonder if the wavetrac unit that you have is the same one meant for the m235i since the m240i is known for having a 2.81 ratio in the rwd models.
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