www.bmwofchattanooga.com or call us at 423-894-5660. The best BMW Dealership in the Birmingham, AL area is without a doubt BMW of Chattanooga! Take one step on the lot of BMW of Chattanooga, near Birmingham, AL, and you will quickly see why they are the best. BMW of Chattanooga has the best new and used BMW inventory. BMW of Chattanooga has the best service department. BMW of Chattanooga has the best parts department.