Definition
Lower Cd improves top speed and fuel economy.
Modifications adding wings or wide tires often increase drag.
Automotive Wiki
Body & Aero
Drag Coefficient
A dimensionless measure of aerodynamic drag relative to frontal area and speed.
Related terms
- DownforceAerodynamic load pushing the car toward the ground at speed, increasing grip.
- Front SplitterA horizontal extension under the front bumper creating low-pressure airflow and …
- Rear WingAn airfoil mounted on the trunk or hatch producing rear downforce.
- DiffuserAn underbody expansion accelerating air exit at the rear, reducing pressure and …
- Widebody KitFlared fenders and extended panels covering wider wheels and tires.
- Roll CageA welded tubular structure protecting occupants and stiffening the chassis in im…
Category: Body & Aero · Updated August 31, 2026