I haven't gone through and looked at every single comment (so don't jump down my throat if i repeat something)but, the chassis designation is relative to the progress made on chassis development. The Chassis of the new and old M5 have to be pretty similar because the engine from the 30 jahre carries over and the chassis number takes that into account. It's not as "new" as the G30 because of the sharing of components from the last generation. I think we can expect a very similar transmission on the f90 (with a transfer case)/ differential and some carried over suspension part. Nothing to worry about with the next gen though. With AWD, I think we can expect launches in the very low 3 seconds.
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