chassis glossary

Suspension Glossary – Terms Simply Explained

A

• Axle
  The central connection between a vehicle’s wheels. It supports the wheels and transmits forces between the body and the road.

• Axle geometry
  The alignment of wheels and axles, including toe, camber, and caster. Proper geometry ensures stability and even tire wear.

B

• Bushings
  Elastic connectors that dampen vibrations and noise between suspension components.

• Ground clearance
  The distance between the road and the lowest point of the vehicle. Key for off-road capability and comfort.

D

• Shock absorber
  A suspension component that controls spring oscillations and ensures a smooth ride.

E

• Offset (ET)
  The distance between the wheel mounting surface and its center. Affects wheel positioning and vehicle dynamics.

F

• Springs
  Components that absorb shocks and road irregularities. Types include coil, leaf, and air springs.

• Strut
  A combination of a spring and a shock absorber, commonly found in McPherson suspensions.

H

• Height-adjustable suspension
  A suspension system that allows manual or electronic adjustment of ground clearance. Common in sports cars and SUVs.

K

• Stabilizer link
  Connects the stabilizer bar to the wheel hubs or control arms. Reduces body roll in corners.

L

• Steering radius
  The distance between the tire center and the steering pivot. Influences handling and stability.

Q

• Control arm
  Links the wheel to the body, absorbs lateral forces, and ensures wheel guidance.

S

• Stabilizer bar
  A component that reduces body roll during cornering and improves stability.

• Sports suspension
  A specially tuned suspension with stiffer springs and dampers, offering better dynamics but less comfort.

• Track
  The distance between the wheels on an axle. A wider track enhances stability.

• Track widening
  Additional components that increase track width, giving a sportier appearance.

T

• Lowering
  A suspension modification to bring the vehicle closer to the ground. Improves aerodynamics and cornering, but may reduce comfort.

W

• Roll stability
  The suspension's ability to minimize lateral body movements during cornering.