Every motor vehicle, operated singly or when towing any other vehicle, shall be equipped with a mirror so located as to reflect to the driver a view of the highway for a distance of at least 200 feet to the rear of such motor vehicle.
(Acts 1927, No. 347, p. 348; Code 1940, T. 36, §37; Acts 1959, No. 292, p. 860.)
Alabama mirror reg (findlaw.com)...
So no... you don't need side mirrors, your rear view covers you, so long as you can see 200' behind you through it