A trailer configured to lower an overall center of gravity. Said trailer comprises a tank, a wheel assembly, a kingpin assembly, a height, a length. Said tank comprising a cavity contained within a lower body, an upper body, a transitioning body, a front end, and a rear end. Said tank comprising a lower center of gravity, an upper center of gravity and said overall center of gravity. Said lower body comprising said lower center of gravity, a lower body ground clearance, a lower body length and a lower body height. Said upper body comprising said upper center of gravity, an upper body ground clearance, said height, and an upper body length. Said tank comprising said length, a height equal to said height, and a ground clearance equal to said lower body ground clearance. Said transitioning body comprising a transitioning body length.