What is the wheel size of a BMW 320?
2 Answers
The wheel size of the BMW 320 is 225/55-R16. When replacing tires, it is recommended to use the original model for optimal vehicle performance matching. Explanation of the 225/55-R16 model: 225—refers to the tire width of 225mm. 55—refers to the aspect ratio, meaning the section height is 55% of the width. R—indicates that the tire is a radial tire (the inner layer of this tire is manufactured using the radial method). 16—refers to the rim diameter of 16 inches. Introduction to wheel hubs: The wheel hub is the rotating part of the wheel core connected by pillars inside the tire, which is the metal component mounted on the axle that supports the tire. It is also called the wheel rim, steel rim, or tire ring. Wheel hubs come in various types based on diameter, width, manufacturing method, and material.
I've been in the automotive industry for over a decade. The factory wheel size for a BMW 320 typically ranges between 17 to 18 inches, depending on the model year and trim level. Base models usually come with 17-inch wheels, while sport or M-sport packages often feature 18-inch ones. Wheel size directly impacts driving stability and comfort—smaller wheels favor fuel efficiency, whereas larger wheels enhance handling but may increase tire noise. You can check the markings on the tire sidewall, like the '17' in '225/45R17', which indicates wheel diameter. Avoid blindly upgrading to excessively large wheels during modifications, as it may affect suspension and fuel consumption. Always consult the vehicle manual for the most accurate specs—sticking to factory configurations helps prevent potential issues.
