Review update: 2022 BMW M440i xDrive Gran Coupe blurs the line between luxury and performance

It used to be simple. While all BMWs were sporty, M represented the pinnacle of performance: M3 for blistering compact, M4 for compact coupe or drop-top fun, X5 M for the crossover set, etc. Now M can stand for marketing or muddled, with the proliferation of M Sport trim packages and lesser M models. The M440i xDrive Gran Coupe I recently drove is…