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Steve Dinan Built a Better BMW M4: Review
With 735 horsepower and a Dinan-tuned suspension, the CarBahn BMW M4 is a precision-guided sledgehammer. Okay, so what the hell is a CarBahn? And what does it have to do with this $135,000, ...
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BMW M4 M4 xDrive 530 Competition M 2dr Step Auto Review
This adds a switchable four-wheel drive system to the M4 Competition, allowing you to choose between four-wheel drive, four-wheel drive Sport and two-wheel drive. These come with 20in black alloy ...