Technical Dictionary

Negative camber

Alignment setting where the tops of the tyres are leaning toward the centerline of the vehicle; racers use a negative camber angle for maximum cornering potential.

Negative offset

When the wheel mounting face is closer to the brake side of the wheel, moving the tyre and wheel assembly out of the fender well.

Nominal Rim Diameter

The diameter of a tyre rim, given in nearest whole numbers (e.g. 15 in.).

NHTSA

National Highway Traffic Safety Administration.