Both front and rear the BMW 5-Series Gran Turismo Concept comes with frameless doors, a feature of particularly sporting cars now to be admired for the first time on a four-door BMW.

• 前部和后部的宝马5系列GT赛车概念带有无框车门，尤其是体育的车现在要为一个四门宝马首次欣赏功能。