titanium exhaust, and a four-year, 50,000-mile warranty. The CarBahn BMW M4 Competition is a bit extreme around town. The motorsports-derived suspension is the classic Dinan setup of soft springs ...
motor1.com on MSN16d
Steve Dinan Built a Better BMW M4: ReviewWith 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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