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2013 Dinan S3 BMW 550i

Steve Dinan has been enhancing BMW models since 1979. But don't throw his company into the ring with the dozen or so other tuners who tweak, tinker and piggyback upgrades on the famed German marque. Dinan is a tuner, but it's also an engineering firm that writes its own software, builds its own parts and then backs everything it does with a factory-grade warranty. That sort of fastidiousness comes at a

Geneva
2012 BMW M550d xDrive leaves us both giddy and quietly weeping

Even though we drove it extensively last month, BMW officially took the wraps off of the 2012 BMW M550d xDrive at the Geneva Motor Show. The M-tuned five-passenger sedan continues to put a smile on our fa

2011 BMW 5 Series priced from $50,475*

2011 BMW 535i – Click above for high-res image gallery