What does 17×7.5j mean in wheel specifications?
1 Answers
The wheel size 17×7.5j can be interpreted as follows: The number 17 refers to the wheel diameter in inches, indicating a 17-inch wheel. The number 7.5 represents the wheel's cross-section width in inches. The letter 'j' denotes the shape and height of the wheel flange. The 'X' in the middle does not signify length × width as commonly understood, but rather indicates that the wheel is of a one-piece deep well type, typically used for passenger vehicles. In contrast, large trucks and specialized wheeled machinery often employ semi-deep well wheels. The advantages of larger wheel sizes are as follows: 1. Larger wheels offer greater load-bearing capacity. Smaller wheels often use steel materials to save costs, whereas larger wheels typically employ aluminum alloy, especially those made by forging processes. The load-bearing capacity of such wheels is five times that of ordinary steel wheels. 2. Larger wheels improve the vehicle's cornering performance. After wheel modification, the increased contact area enhances stability during turns, significantly boosting the vehicle's cornering capability. 3. Larger wheels may reduce ride comfort. Generally, the overall tire diameter remains constant, meaning larger wheels result in thinner tire sidewalls. This reduces the tire's ability to dampen road noise, leading to increased cabin noise and compromised interior quietness.
