Suspension Geometry Explained: Camber, Caster, and Toe

Understanding suspension geometry. How alignment settings affect handling and tire wear.

technical general

Suspension geometry determines how your car handles at the limit. Understanding camber, caster, toe, and roll centers allows you to tune your car's behavior for any driving style.\n\nThis guide explains the key concepts and how they affect handling.

Alignment Angles\n\n### Camber\n\nTilt of the wheel when viewed from the front.\n- Negative: Top of wheel tilts inward (more grip in corners)\n- Positive: Top of wheel tilts outward (rarely used)\n- Street: -0.5 to -1.5 degrees\n- Track: -2.0 to -4.0 degrees\n\n### Caster\n\nAngle of the steering axis when viewed from the side.\n- More caster: Better straight-line stability, heavier steering\n- Less caster: Lighter steering, less self-centering\n- Most cars run 5-8 degrees positive caster\n\n### Toe\n\nDirection wheels point relative to centerline.\n- Toe-in: Front of wheels point inward (stability)\n- Toe-out: Front of wheels point outward (turn-in response)\n- Too much toe causes tire wear and drag\n\n## Advanced Concepts\n\n### Roll Center\n\nThe point around which the body rolls. Lower roll center means more body roll but better grip.\n\n### Bump Steer\n\nUnwanted steering input when suspension compresses. Caused by improper tie rod geometry.\n\n### Anti-Squat/Anti-Dive\n\nGeometric features that resist weight transfer during acceleration/braking.\n\n## Tuning for Handling\n\n- Understeer: More front camber, less front toe-in, stiffer rear\n- Oversteer: Less rear camber, more rear toe-in, stiffer front\n- Always make one change at a time and test

Final Thoughts

Suspension geometry tuning is an iterative process. Start with a proper alignment to known good settings, then adjust based on driving feel and tire wear.

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