Is it meaningful to upgrade from 17-inch to 18-inch wheels?

[CodyLee]

For family cars, upgrading from 17-inch to 18-inch wheels is not meaningful and modification is not recommended. Below are the relevant details about wheel modification: 1. Impact of wheel modification: It will significantly affect the vehicle's mileage calculation. Since the vehicle calculates mileage using wheel speed sensors, increasing the wheel size lengthens the circumference. Now, one rotation of the tire is equivalent to slightly more than one rotation before modification, causing the odometer to display a lower mileage than actual. After increasing the wheel size by one inch, the vehicle may face issues during annual inspections, as traffic laws prohibit unauthorized modifications, making such modifications illegal. Violating these laws means modified wheels cannot pass annual inspections. 2. Precautions for wheel modification: After modifying the wheels, you should register the changes with the vehicle management office within 10 days. Failure to do so may result in penalties from traffic police during road use. Once inspected and approved by the vehicle management office, you can obtain a new vehicle license and use the car normally.