A Deeper Look at the S2000’s Chassis and Suspension Philosophy

The Honda S2000 represents a high-water mark for front-engine, rear-wheel-drive sports car engineering. Its double-wishbone suspension at all four corners, combined with a rigid chassis and near-perfect 50:50 weight distribution, provides a superb foundation for tuning. However, even this excellent factory setup can be dramatically improved for dedicated cornering and high-speed stability. The stock suspension is a compromise between road comfort, everyday usability, and performance. By systematically adjusting springs, dampers, sway bars, and alignment, you can unlock the car’s true potential without sacrificing daily-driver manners.

Before making any changes, it’s critical to understand how each component influences vehicle dynamics. The S2000 is particularly sensitive to rear-end geometry changes; small adjustments to toe or camber can shift the balance from playful to planted. Many owners find that the stock rear suspension tends toward lift-throttle oversteer, especially on older, worn dampers. The settings below are designed to neutralize this tendency while maximizing front-end bite for aggressive turn-in.

Foundational Knowledge: Suspension Components and Their Roles

Springs – The Foundation of Ride and Roll Control

Springs support the vehicle’s weight and determine how much the suspension compresses under load. The S2000’s factory spring rates are approximately 290 lbs/in front and 280 lbs/in rear, which are on the soft side for serious cornering. Increasing spring rates reduces body roll and improves transient response, but too stiff a spring can cause the car to skitter over bumps and lose tire contact. Aftermarket coilover kits often offer rates from 350–600 lbs/in. The recommended rates below are a proven middle ground for street and track use.

Dampers – Controlling the Motion

Shock absorbers (dampers) control the speed at which the spring compresses and rebounds. Adjusting damping affects how quickly the car settles after a bump, how much weight transfers during braking and turning, and overall chassis control. Many aftermarket coilovers offer independent bump and rebound adjustment, but for simplicity, most track-oriented setups use a single adjuster. The settings below assume a typical high-quality adjustable damper (e.g., Öhlins, KW, or Fortune Auto) with 24–30 click ranges.

Sway Bars – Anti-Roll without Compromising Ride

Sway bars (anti-roll bars) link the left and right wheels, resisting body roll during cornering. A stiffer front bar reduces understeer, while a stiffer rear bar reduces oversteer. The S2000 responds very well to a moderately stiffer rear bar to control the rear end without promoting snap oversteer. Bar diameter is the primary factor; many aftermarket options come with adjustable end links to fine-tune the effective stiffness.

Alignment – The Key to Tire Contact Patch

Alignment angles—camber, toe, caster—determine how the tire meets the road. Negative camber improves cornering grip at the expense of straight-line wear. Toe settings affect stability and steering response. The S2000’s double-wishbone front suspension allows generous camber adjustment, while the rear uses a multi-link with limited camber adjustability (often requiring aftermarket upper control arms for more than -2.0°).

These settings are a starting point for a S2000 used on aggressive street driving, autocross, or track days. Always begin with a known baseline and adjust based on driver preference and conditions.

Spring Rates

Choose linear-rate springs for predictable handling. Progressive springs are not recommended for performance driving as they make the car feel soft initially then overly stiff.

  • Front Spring Rate: 450 lbs/in (8 kgf/mm)
  • Rear Spring Rate: 400 lbs/in (7 kgf/mm)

This combination retains a slight front bias to promote rotation under throttle, while keeping the rear compliant enough to maintain traction on uneven surfaces. If you frequently drive on bumpy roads, consider dropping to 400/350 lbs/in.

Damper Settings

Start from full stiff (0 clicks from full stiff) and soften as needed. Many adjustable dampers have a 24-click range. The numbers below are “clicks from full soft” (i.e., turning adjuster clockwise to softest position, then counting clicks toward stiff).

  • Front Damping: 10 clicks from full soft (approx. 40–50% stiff)
  • Rear Damping: 8 clicks from full soft (approx. 35% stiff)

The slightly stiffer rear (relative to the softer rear spring) helps control squat under acceleration and prevents the rear from bouncing over bumps. If you experience excessive understeer, soften the front 2 clicks; if the rear feels loose, stiffen the rear 2 clicks.

Sway Bar Recommendations

  • Front Sway Bar: 24mm hollow bar (e.g., Eibach or Whiteline) – set to middle hole if adjustable.
  • Rear Sway Bar: 18mm solid bar (OEM AP2 rear bar is 18mm, but aftermarket 18–20mm adjustable bars offer more tuning).

The combo of a stiff front bar and mildly stiffer rear bar reduces body roll dramatically while keeping the rear planted. If you want more rotation, detach the rear bar entirely (or use a very soft setting) – this is common in competitive autocross setups.

Alignment Specifications

Alignment is the single most impactful setting for under $200. These numbers are for a performance alignment; expect slightly accelerated tire wear on the inside edge if you daily drive.

  • Front Camber: -2.5 degrees (more if you have aftermarket upper control arms or camber plates; max out stock adjustability around -2.8°)
  • Rear Camber: -2.0 degrees (requires an aftermarket rear camber adjuster to go beyond -1.5°)
  • Front Toe: 0 total or slight toe-out (0.02” toe-out per side)
  • Rear Toe: 0.10” total toe-in (0.05” per side)
  • Caster: Max positive caster possible (stock is ~6°, aim for 7–8° with aftermarket top hats)

Toe-out at the front improves turn-in responsiveness but can make the car wander on the highway. Toe-in at the rear stabilizes the car under braking and prevents oversteer. If you find the car too eager to rotate, reduce rear toe-in to 0.05” total.

Advanced Tuning: Corner Balancing and Tire Selection

Corner Balance for Perfect Weight Distribution

After setting ride height, a corner balance step is essential. This involves adjusting spring perches so that the diagonal weight (LF+RR vs RF+LR) is equal. An ideal corner balance for the S2000 is within 0.5% cross-weight. Many shops charge around $150 for this service. If you’re building a dedicated track car, invest in a set of scales and learn to do it yourself. An unbalanced car will have inconsistent cornering grip and unpredictable rotation.

Tire Pressure and Compound

Tires are the ultimate suspension component. For maximum cornering, use a 200-treadwear summer tire like the Bridgestone Potenza RE-71RS or Yokohama Advan A052. Start with cold pressures of 30 psi front, 29 psi rear, then adjust based on wear and feel. A pyrometer can reveal whether you need more camber or pressure adjustments. Generally, you want the outside edge of the tread to reach 180–200°F after a hot lap. If the center is much hotter, drop pressure; if the edges are hotter, add camber.

Testing and Iterating Your Setup

Take your S2000 to a large empty parking lot, skidpad, or track day. Use a simple checklist:

  • Initial Corner Entry: Does the car understeer (push) or oversteer (rotate too much)? Note steering wheel angle.
  • Mid-Corner: Does the car maintain a constant radius? Is there excessive body roll? Check tire contact patch with temp probe.
  • Exit: Can you apply power without the rear stepping out? If the inside rear tire spins, your dampers may be too stiff or you need a limited-slip differential (torsen or clutch-type).

Change one parameter at a time. For example, if the car understeers on entry, increase front camber or soften front dampers. If it oversteers on exit, stiffen rear dampers or increase rear toe-in. Keep a logbook with settings and weather conditions.

To achieve the settings above, you’ll likely need aftermarket parts. The stock S2000 suspension lacks camber adjustment in the rear and has limited front camber. Key upgrades:

  • Adjustable coilovers (budget: BC Racing, mid-range: Ohlins, premium: MCS)
  • Front camber plates (e.g., SPC or Karcepts)
  • Rear upper control arms (SPC or Hardrace) for camber adjustment
  • Adjustable sway bar end links (to prevent binding)
  • A decent alignment shop that understands performance cars

External resources: S2KI Suspension Forum is a goldmine of owner experiences. Also check Race Comp Engineering for suspension setup guides and Winhill Alignment for advanced alignment theory.

Putting It All Together

The Honda S2000 rewards careful suspension tuning like few other cars. By raising spring rates to 450/400 lbs/in, setting dampers to a 10/8 click split, choosing a 24mm front and 18mm rear sway bar, and aligning to -2.5° front camber, -2.0° rear camber, with conservative toe, you will transform the car from a fun roadster into a precise cornering machine. Remember that the ultimate setup depends on your driving style, tire choice, and intended use. Start with these recommendations, test thoroughly, and make incremental changes. With patience and a logbook, your S2000 will reward you with telepathic handling and unwavering stability.