Caster
Caster is the backward or forward tilt of the steering axis when seen from the side.
What is Caster?
Positive caster, with the axis leaning backwards, is used on almost all cars. It is usually not adjustable on everyday cars. More caster gives a heavier steering feel and better straight-line stability, but also makes the wheel heavier at low speeds.
How it works
Like the wheels of a shopping trolley, positive caster makes the wheels return to straight ahead after a turn.
Why it matters for your car
Uneven caster between sides can make the car pull and is often a sign of bent parts. A caster difference often shows after an impact with a kerb or pothole that bent a suspension part.
Other terms
- Approach Angle
- Ball Joint
- Battery Tester
- Brake Force Distribution (Brake Bias)
- Engine Timing Tools (Locking Kit)
- Headrest (Head Restraint)
- Iron Fallout Remover
- M+S Marking (Mud And Snow)
- Manufacturer Oil Approval
- Mode 3 Charging Cable (Type 2 Cable)
- Over-the-air Update (OTA)
- Rear Diffuser
- Roadster
- Scheduled Charging (Charging Timer)
- Tar Remover
- Timing Chain
- Trip Computer
- Twin Carburettors
- V12 Engine
- Vehicle Tax (Road Tax)