Formula One glossary

Understeer

A lack of grip at the front wheels, which makes the car feel like slipping away at the front while cornering. Such instability is mostly solved by softening the front suspension or adding downforce on the front wing.

Undertray

Also known as the floor, the undertray houses the monocoque, engine/gearbox, and other chassis components.

Unsprung weight

This refers to all parts of the vehicle that are not supported by the suspension system, wheels, tires, etc.