Can be modified by customers' requirements. 40'RAILED-SIDE SEMI-TRAILER SPECIFICATIONS External Length: 13, 000 mm* Width: 2, 500 mm* Height: 2, 700 mm* Maximum Gross Weight: 37, 990 kg* Maximum Payload: 30, 000 kg* Tare Weight: 7, 990 kg* Fifth Wheel Coupling Height: 1, 219 mm* Fifth Wheel Load Empty: 2, 990 kg* Full: 14, 200 kg* Front Overhand: 1, 200 mm * Rear Overhand: 1, 990 mm * Wheel Space: 1, 310 mm* King Pin To The First Axle: 7, 190 mm* Rear Axle Load: 23, 790 kg* Tires Specification: 12.00-20* The Number Of Tires: 12