How to Identify Car Wheel Hub Models?
3 Answers
Diameter, commonly referred to as wheel hub size, can be easily identified on the tire. For example, the number 17 indicates the wheel hub size, simply meaning this is a 17-inch wheel hub.
The wheel model is actually engraved on the inside of the rim. You can remove the tire and directly check those combinations of numbers and letters. For example, my car is engraved with 17x7J ET45, which indicates a diameter of 17 inches, a width of 7 inches, a J-type rim, and an offset of 45mm. The bolt pattern is usually in a format like 4x100 or 5x114.3, referring to the number of bolt holes and the center distance. If you can't see it, check the vehicle manual or look for a sticker on the driver's side door frame—both should have the specifications. Choosing the wrong model can affect driving stability and even wear out the braking system, so I always personally verify before changing to new wheels to avoid future troubles. Regularly checking the condition of your wheels and identifying issues early is the most hassle-free approach.
When I first started learning about cars, I had no idea about wheel rim models, but it wasn't hard to look up. First, check the owner's manual in the car—there's usually a section on wheel rim sizes. Alternatively, look for a label on the door edge or in the engine compartment, which lists the basic parameters. If you're still confused, you can directly ask a salesperson at an auto parts store; they can usually quickly tell you the correct bolt pattern and offset values. The key is to ensure that the new rims you buy match the original car's specifications, otherwise, it might cause wobbling issues at high speeds. Most importantly, don't attempt to disassemble anything yourself—safety comes first. Getting help from a car-savvy friend is also a good idea.
