What does wheel J mean?

[DiJuliet]

Tire J value actually refers to the width of the wheel rim. Wheel rims with different J values need to be matched with tires of corresponding widths. Below is an introduction to the relevant information about tire J values: 1. Wheel hub width: Wheel hubs are marked with specifications like 7J or 8J. Here, the numbers represent the width of the wheel hub, while J indicates the shape and height of the wheel hub flange. Many car modification enthusiasts opt for wider rims paired with wider tires, as broader tires can enhance a vehicle's grip, thereby improving handling performance. 2. Industry notation: In the wheel hub industry, specifications are typically written as 16X6.5J. The number 16 denotes the wheel diameter in inches (indicating a 16-inch wheel). The number 6.5 represents the cross-sectional width of the wheel hub in inches. The 'X' in the middle does not signify length × width as commonly perceived, but rather indicates that the wheel hub style is a one-piece deep well design, primarily used for passenger vehicles. In contrast, large trucks and specialized wheeled machinery often employ semi-deep well designs.