BMW 8 Series (G15) (2018) is 7 mm (0.28 inch) wider and 66 kg (146 lbs) lighter than Lexus RX (2018).
Lexus RX (2018) is 46 mm (1.81 inch) longer, 379 mm (14.92 inch) higher and has 101 liters (3.57 ft3) bigger cargo space than BMW 8 Series (G15) (2018).
