Why the height of racing cars is kept small?

Answer 1

if the car is high,it is easy to produce the torque in car due to large moment arm,and the car can takes the sommerslauts. Ahmed Bilal Pakistan

Answer 2

To reduce frontal area. Aerodynamics aside, speed is a function of frontal area and surplus brake horsepower. So reduced frontal area can equal higher top speed, and one way to reduce frontal area is to lower the height of the car.