Wheel spacers are aftermarket components used to increase the distance between a vehicle's wheels. They are essentially metal spacers that fit over the existing wheel studs and push the wheel away from the vehicle hub, resulting in a wider stance.

There are several reasons why someone might choose to install wheel spacers on their vehicle. One of the most common reasons is to improve the car's handling and stability. By increasing the distance between the wheels, wheel spacers can help reduce body roll and increase grip when cornering at high speeds.

Another reason for using wheel spacers is to allow for the installation of larger brakes or wheels that may not fit properly with the stock setup. Wheel spacers can provide the necessary clearance for these upgrades, allowing for better performance and a more aggressive appearance.

However, there are also some potential drawbacks to using wheel spacers. One of the main concerns is that they can put additional stress on the vehicle's suspension and drivetrain components. This can lead to premature wear and even failure if the spacers are not installed properly or if they are too large.

Additionally, some jurisdictions have laws or regulations regarding the use of wheel spacers, and it's important to ensure that any modifications made to your vehicle comply with local laws.

Overall, wheel spacers can be a useful aftermarket component for improving a vehicle's performance and appearance, but it's important to weigh the pros and cons before deciding to install them and to seek professional advice if you're unsure about the installation process.