BMW 8 Series (G15) (2018) is 376 kg (829 lbs) lighter than Tesla Model X (2017).
Tesla Model X (2017) is 193 mm (7.60 inch) longer, 97 mm (3.82 inch) wider, 343 mm (13.50 inch) higher and has 530 liters (18.72 ft3) bigger cargo space than BMW 8 Series (G15) (2018).