Auto body repair & detailing: spoilers, high performance cars, spoiler

Question
hello.i want to know what is the function of spoilers.

Answer
Spoilers actually spoil the air going over the rear of a vehicle, letting it slip thru the air faster. a spoiler can also put down pressure on the rear of a vehicle, increasing it's grip to the ground. Performance spoilers are adjustable for high performance cars that need tuned to specific track conditions, factory rigid spoilers are pretty much cosmetic, but do provide limited benefit to the car. Bill