AIR PRESSURE

(BUMP = "go up" or add more air-- DROP = take some air out.)

It is all about balance and how the car is gripping the racetrack. With the type of tires Goodyear provides today an increase in air pressure raises the "spring rate" in the tire itself and changes the car's handling characteristics. If his race car was "tight" (won't turn) coming off a corner, a driver might request a slight air pressure increase in the right rear tire to "loosen it up." (make it turn better)