S2000 Alignment Specs and How to Set Them Up for Street and Track

S2000 Alignment Specs and How to Set Them Up for Street and Track

Proper alignment is foundational to the S2000's handling. Factory specs are well-chosen for street use; track-focused setups require adjustments. This guide covers what to ask for.

Factory Alignment Specifications (USDM)

Front

| Spec | Factory Range | Preferred | |------|--------------|---------| | Camber | -1.0° to +0.5° | -1.0° to -1.5° | | Toe | -0.08° to +0.08° | 0° to +0.08° (slight toe-in) | | Caster | +3.85° to +5.35° (not adjustable) | — |

Rear

| Spec | Factory Range | Preferred | |------|--------------|---------| | Camber | -1.5° to -2.5° | -1.5° to -2.0° | | Toe | 0° to +0.20° (toe-in) | +0.10° to +0.15° |

Note: Factory camber adjustment range on the stock suspension is limited. Running below -1.5° front requires camber plates. Running below -2.5° rear may require adjustable rear arms.

Adjustability on Stock Suspension

What You Can Adjust (Stock)

• Front camber: Limited range via stock adjustment eccentric bolts
• Rear toe: Adjustable via rear toe arms
• Rear camber: Limited range

What Requires Aftermarket Parts

• More than ~-1.5° front camber: Needs camber plates or adjustable upper arms
• More than ~-2.5° rear camber: Needs adjustable rear lower control arms
• Front and rear caster adjustment: Needs adjustable components

Street Alignment Recommendations

For a street-driven S2000 on stock or light suspension:

Front: -1.0° to -1.3° camber, 0° toe (neutral) Rear: -1.5° to -2.0° camber, slight toe-in (+0.10° to +0.15°)

This gives:

• Good tire wear
• Responsive handling without excessive oversteer
• Neutral straight-line stability

Track Alignment Recommendations

For a dedicated track day setup:

Front: -2.0° to -2.5° camber, 0° to slight toe-out (-0.05° to 0°) Rear: -2.0° to -2.5° camber, 0° to slight toe-in (0° to +0.10°)

More negative camber improves peak cornering grip by keeping the contact patch flatter during body roll. Reduced rear toe-in allows more rotation under power.

Tradeoff: Inner tire wear increases significantly. Track-day cars typically accept this.

Bumpsteer Considerations

Bumpsteer occurs when the suspension travels (compresses or rebounds) and the steering geometry causes the wheel to steer without driver input. On a lowered S2000:

• The steering rack is in a fixed position
• Lowering changes the angle of the steering tie rods relative to the control arms
• This mismatch creates bumpsteer — the car "wanders" over bumps

If you've lowered the car more than 1" and notice nervous behavior over bumps or at high speed, bumpsteer is likely the cause. Solutions include:

• Adjustable tie rod ends (changes the effective tie rod length to match the new geometry)
• Steering rack spacers (lowers the rack to realign geometry)

Finding a Good Alignment Shop

Not all alignment shops understand performance car geometry. When requesting service:

1. Bring your target specs in writing
2. Ask if they have experience with S2000s or other rear-wheel drive sports cars
3. Ask for a printout of before and after values
4. A shop that says "we can't hit those numbers" without explanation may not have the capability or knowledge

Hunter and Snap-On alignment machines found at most tire shops can measure all required parameters. The skill is in understanding what adjustments are actually achievable on stock hardware.