Quote:
Originally Posted by lixiang7349
So why did BMW decide to put a worse engine into the big brother?
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Because when the M2 was introduced the B58 was yet not available.
So they M-fied the tried and true N55 with enhancements and dropped it in the M2, and in that iteration also pushed the N55 to it's max.
By the time the B58 was going in the M240i, it became the M2C that was getting the S55.
One of the major reasons to sunset the last iteration of the N55 in the M2 and replace with S55, was due to new emission regs in EU.
The N55 was not going to meet the new rules, which forced BMW to consider the S55 and also forced a redesign of the front end.