What are the effects of upgrading to larger wheels on a car?

[GabriellaRose]

The effects of upgrading to larger wheels on a car: 1. When increasing wheel size, the overall diameter generally remains unchanged, but it necessitates the use of tires with a lower aspect ratio. This results in better tire grip and improved handling, but at the cost of reduced comfort and increased rolling resistance, leading to higher fuel consumption. 2. Impact on annual inspections: Annual vehicle inspections require the car to remain in its factory condition. Upgrading wheels and tires to a larger size is considered a modification, which can make it difficult to pass inspections in stricter regions, often requiring reversion to the original setup. 3. Safety concerns with improper wheel replacement: The center bore of the wheel is crucial—this is the large hole in the middle of the wheel. If the wheel's hub bore is larger, hub-centric rings must be used; otherwise, the wheels may vibrate at high speeds. Additionally, factors like PCD (Pitch Circle Diameter) and offset are important. If the offset is too large after replacement, it may cause friction with the car body.