除了上面的,还有个需要知道的是安装螺丝的个数和尺寸,不同的车不一样。简称PCD:
PCD (Pitch Circle Diameter) is the measurement of the diameter of the imaginary circle drawn through all of the wheel bolts or studs on a wheel. It is also known as the 'bolt circle'.
A wheel's PCD is usually displayed after the number of studs, separated by a slash. Hence a 'pcd' of 5/120 means that the wheel has five studs, and a pitch circle diameter of 120mm. A 'pcd' of 4/114.3 means the wheel is four stud with a pitch circle diameter of 114.3mm.