6. Oversized Spoilers
The sole purpose of spoilers is to create the downforce necessary to press the car to the ground. This helps stability at high speeds. In theory, the bigger the surface of the spoiler, the more effective it is at producing downforce. However, most overenthusiastic owners thought having an oversized spoiler on their cars would help them be faster and handle better.
But since they don’t drive a Formula One car, these big spoilers are unnecessary. For starters, they do nothing since regular street cars are never fast enough. So, the spoiler wouldn’t make a difference. And if the driver operated their car so fast on the streets, they would end up in jail.
On the other hand, those big spoilers affect visibility. They are also heavy, so you have to mount special brackets and drill holes in your trunk. All in all, this is an unnecessary and often tacky modification you can do without.