GMC Sierra 1500 (2016) is 3 mm (0.12 inch) wider, 532 kg (1,173 lbs) lighter and has 312 liters (11.02 ft3) bigger cargo space than Toyota Tundra (2015).
Toyota Tundra (2015) is 593 mm (23.35 inch) longer and 58 mm (2.28 inch) higher than GMC Sierra 1500 (2016).