Is It Legal to Change from 17-Inch to 18-Inch Wheels?
2 Answers
Changing from 17-inch to 18-inch wheels cannot be registered and is illegal, as modifying wheels to non-original sizes constitutes illegal modification. Below are specific details about car wheels: 1. Working Method: The wheel hub bearing unit is designed to work in conjunction with the anti-lock braking system. The wheel hub unit is designed with inner and outer flanges; the inner flange is bolted to the drive shaft, while the outer flange integrates the entire bearing assembly. 2. Wear Impact: Worn or damaged wheel hub bearings or units can lead to costly failures during vehicle operation and even pose safety hazards. 3. Upgrade Methods: The most common methods for upgrading car wheels include switching to aluminum alloy rims or increasing wheel size to enhance vehicle performance and appearance.
I understand some people want to switch from 17-inch to 18-inch wheels for better looks, but this actually depends on local regulations. In most countries, including China, wheel size changes must match the vehicle's original specifications or be approved by certification bodies like the DMV during annual inspections. Otherwise, it could be considered illegal modification. If the size increases, it not only affects speedometer calibration but may also increase stress on the suspension system, accelerate tire wear, and even lead to safety hazards like longer braking distances. I recommend checking the vehicle manual or consulting professional institutions before making any changes. Don’t take risks just for aesthetics—if caught by traffic police or if an accident occurs where insurance won’t cover it, the loss could be significant. Legal wheel modifications should also consider practical driving effects, such as potentially higher fuel consumption, which might outweigh the benefits.
