Spyker C8 Spyder (2005) Wheel Fitment
Spyker C8 Spyder (2005): 5x112 bolt pattern, 57.1mm center bore, OE F 18x8.5J ET35 / R 18x9.5J ET35. Forged wheel fitment specs from ANKUSI.
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Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Flush Fitment | F 19x9J ET30 / R 19x10J ET30 |
How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
On a supercar, wheel weight is one of the few remaining places to cut rotational mass without touching the powertrain or chassis the factory already optimized. Forging gets there at the same structural margin as the OE wheel, which is exactly the trade a car built around outright performance rewards.
The Spyker C8 Spyder ships from the factory on a 5x112 bolt pattern with a 57.1mm center bore and a F 18x8.5J ET35 / R 18x9.5J ET35 wheel. Our flush reference for the Spyker C8 Spyder is F 19x9J ET30 / R 19x10J ET30.; our maximum aggressive reference is F 19x9.5J ET25 / R 19x10.5J ET25. — beyond that, expect clearance issues against the fender liner without further modification.
Spyker C8 Spyder OE Wheel Specs
The Spyker C8 Spyder ships from the factory on 5x112 bolt pattern wheels with a 57.1mm center bore. The stock wheel size is F 18x8.5J ET35 / R 18x9.5J ET35, offering a balanced ride that suits most owners without any rubbing or clearance concerns.
Why the factory spec works for most owners:
- Balances ride comfort with steering response and highway efficiency.
- Wide tire and wheel availability at the factory diameter keeps replacement costs low.
- Lower unsprung weight than larger aftermarket wheels helps ride quality and acceleration.
- Guaranteed clearance against brake calipers and suspension components.
Flush Fitment
For a flush look without any body modification, most Spyker C8 Spyder owners run F 19x9J ET30 / R 19x10J ET30. This setup tucks the wheel face closer to the fender lip while staying within safe load and clearance limits.
Maximum Aggressive Fitment
Owners chasing a more aggressive stance push to F 19x9.5J ET25 / R 19x10.5J ET25. Koni inboard pushrod suspension; 18-inch Aeroblade wheels; AP Racing brakes; Michelin Pilot Sport 4S tires. Note: The foundational Spyker model; Audi 4.2L V8 is highly reliable but the bespoke chassis requires specialist care. Clearance should be verified before ordering, especially on lowered cars.
5-Tier Configuration Options
A – Factory-Style: 18x8.5J ET35
Recommended setup: Factory-matched forged replacement
Economy impact: None
Best for: Daily drivers, warranty-conscious owners
Appearance 5/10 | Comfort 10/10 | Install difficulty ★☆☆☆
Estimated cost range: $$ (OE replacement)
B – Comfortable Upgrade: F 18.5x9J ET33 / R 18.5x10J ET33
Recommended setup: Direct bolt-on, factory suspension
Economy impact: Minimal
Best for: Owners who want a mild upgrade with no compromise
Appearance 6/10 | Comfort 9/10 | Install difficulty ★☆☆☆
Estimated cost range: $$ - $$$
C – Balanced / Flush Fit: F 19x9J ET30 / R 19x10J ET30
Recommended setup: Flush forged wheels, stock or mild lowering
Economy impact: Slight increase
Best for: Enthusiasts wanting a flush look daily
Appearance 8/10 | Comfort 7/10 | Install difficulty ★★☆☆
Estimated cost range: $$$
D – Aggressive: F 19x9.5J ET28 / R 19x10.5J ET28
Recommended setup: Wider forged wheels, coilovers or lowering springs
Economy impact: Noticeable increase
Best for: Show-and-drive builds
Appearance 9/10 | Comfort 5/10 | Install difficulty ★★★☆
Estimated cost range: $$$$
E – Max Aggressive: F 19x9.5J ET25 / R 19x10.5J ET25
Recommended setup: Koni inboard pushrod suspension; 18-inch Aeroblade wheels; AP Racing brakes; Michelin Pilot Sport 4S tires. Note: The foundational Spyker model; Audi 4.2L V8 is highly reliable but the bespoke chassis requires specialist care.
Economy impact: Significant increase
Best for: Show builds, weekend cars
Appearance 10/10 | Comfort 3/10 | Install difficulty ★★★★
Estimated cost range: $$$$$
Performance Comparison Matrix
| Wheel Spec | Tier A | Tier B | Tier C | Tier D | Tier E |
|---|---|---|---|---|---|
| Wheel Spec | 18x8.5J ET35 | F 18.5x9J ET33 / R 18.5x10J ET33 | F 19x9J ET30 / R 19x10J ET30 | F 19x9.5J ET28 / R 19x10.5J ET28 | F 19x9.5J ET25 / R 19x10.5J ET25 |
| Economy Impact | None | Minimal | Slight increase | Noticeable increase | Significant increase |
| Appearance | 5/10 | 6/10 | 8/10 | 9/10 | 10/10 |
| Comfort | 10/10 | 9/10 | 7/10 | 5/10 | 3/10 |
| Install Difficulty | ★☆☆☆ | ★☆☆☆ | ★★☆☆ | ★★★☆ | ★★★★ |
| Cost Range | $$ (OE replacement) | $$ - $$$ | $$$ | $$$$ | $$$$$ |
| Best For | Daily drivers, warranty-conscious owners | Owners who want a mild upgrade with no compromise | Enthusiasts wanting a flush look daily | Show-and-drive builds | Show builds, weekend cars |
Real-World Reference Cases
The following builds are compiled from typical ANKUSI customer configurations for this platform and are illustrative, not individually verified real-world builds.
Case 1: Daily Driver (Factory-Style)
Profile: Commuter prioritizing comfort and reliability.
Setup: F 18x8.5J ET35 / R 18x9.5J ET35 forged wheels, factory suspension.
Cost: $$ (OE replacement)
Outcome: No clearance issues, factory ride quality retained.
Case 2: Balanced Enthusiast (Balanced / Flush Fit)
Profile: Weekend driver wanting a flush stance without sacrificing daily usability.
Setup: F 19x9J ET30 / R 19x10J ET30 forged wheels.
Cost: $$$
Outcome: Flush fitment with acceptable ride comfort for daily use.
Case 3: Show Build (Max Aggressive)
Profile: Show-and-shine build prioritizing stance over comfort.
Setup: F 19x9.5J ET25 / R 19x10.5J ET25 forged wheels. Koni inboard pushrod suspension; 18-inch Aeroblade wheels; AP Racing brakes; Michelin Pilot Sport 4S tires. Note: The foundational Spyker model; Audi 4.2L V8 is highly reliable but the bespoke chassis requires specialist care.
Cost: $$$$$
Outcome: Maximum aggressive stance; clearance verified case-by-case.
Decision Guide
Offset & Backspacing Reference
Backspacing is calculated as: wheel width (in) / 2 + offset (mm) / 25.4 + 0.5.
- OE 18x8.5J ET35: backspacing ≈ 6.13"
- Flush 19x9J ET30: backspacing ≈ 6.18"
- Max 19x9.5J ET25: backspacing ≈ 6.23"
Use our offset & backspacing calculator to fine-tune your fitment, or contact ANKUSI for a custom forged wheel quote for your Spyker C8 Spyder.