What is the size of the Crown wheel hub?
3 Answers
The Crown wheel hub is 17 inches. Below are specific details about wheel hubs: 1. Location of the wheel hub: The wheel hub is the central part of the wheel where the axle is installed, commonly referred to as the "rim" or "steel rim." Wheel hubs are prone to accumulating dirt, and if not cleaned for a long time, they may corrode and deform, posing safety hazards. 2. Material classification of wheel hubs: (1) Steel wheel hubs: The main advantages are simple manufacturing processes (typically using casting techniques, such as low-pressure casting for aluminum alloy hubs) and relatively low cost, along with strong resistance to metal fatigue. Steel wheel hubs are heavier (steel hubs are much heavier than aluminum alloy hubs of the same size), have greater inertial resistance, poorer heat dissipation, and are prone to rust. (2) Alloy material wheel hubs: They are lighter in weight, have lower inertial resistance, high manufacturing precision, and minimal deformation during high-speed rotation, which improves the vehicle's straight-line driving performance and reduces tire rolling resistance, thereby decreasing fuel consumption. Alloy materials also have thermal conductivity about three times that of steel, providing better heat dissipation, which benefits the vehicle's braking system, tires, and reduces thermal degradation of the braking system.
I've driven several Toyota Crowns, and the 2018 and 2021 models both came with 18-inch wheels, which are quite common. If you opt for the base trim, it might only have 17-inch wheels, but the higher trims or sport versions come with 19-inch ones—like my friend’s top-spec model, which has 19-inch wheels. When changing wheels, pay special attention to tire compatibility. Larger wheels may look better but can reduce comfort and increase bumpiness, while smaller ones might compromise grip. I once upgraded to 20-inch wheels and noticed a slight increase in fuel consumption—daily driving feels more comfortable with the factory size. I recommend checking the vehicle’s placard or manual first to avoid buying non-compliant wheels.
I often work on various Crown models. For older ones from the 1990s, they typically use 16 or 17-inch wheels, while newer models like the 2023 version mostly come with 18 to 19-inch wheels. The exact size depends on the model year and drivetrain type—for example, rear-wheel-drive versions use larger wheels, while front-wheel-drive ones are slightly smaller. During inspections, I measure with a ruler or check the markings on the tires, such as 235/50R18 indicating an 18-inch wheel. Larger wheels improve handling but are more prone to curb rash, whereas smaller ones are more durable. Incorrect sizes might even trigger ABS system warnings, so it's crucial to calculate the offset accurately before modifications.
