The diameter of the front cup holder of BMW x3 is about 7cm to 10cm. According to relevant public information, we learned that the diameter of the front row cup holder of the BMW X3 is about 7cm to 10cm. Cup holders are an indispensable element in the functional design of cars. The first patent for car cup holders was approved, but at that time it was just an additional accessory. In the 1950s, car restaurants and car theaters became popular on a large scale. This The trend has definitely boosted the popularity of cup holders.