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A V6 certainly would be interesting. BMW clings to the I6 because of its inherent balance. The I6 and V12 are considered the "perfect" engine design when it comes to balance of 1st and 2nd order forces. Everything else is a compromise. Maybe the time has come when BMW too will compromise.
As great as an I6 is, there are downsides. It trades packaging dimensions for balance. An I6 is very long for its displacement. When comparing linear dimension to volumetric measurement, a cube is the most efficient simple geometric shape, and it's easy to see how the space requirements of a V6 are much closer to a cube-shape than an I6.
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His: 2019 R1250GS - Black
Hers: 2013 X3 28i - N20 Mineral Silver / Sand Beige / Premium, Tech
Past: 2013 ///M3 - Interlagos Blue Black M-DCT
Past: 2010 135i - TiAg Coral Red 6MT ///M-Sport
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