Hamann Mercedes-Benz SLR Volcano (2008) Wheel Fitment
Hamann Mercedes-Benz SLR Volcano (2008): 5x112 bolt pattern, 66.6mm center bore, OE F 19x9J ET45 / R 19x11.5J ET46. Forged wheel fitment specs from ANKUSI.
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Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Flush Fitment | F 20x9.5J ET35 / R 21x12J ET40 |
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 Hamann Mercedes-Benz SLR Volcano ships from the factory on a 5x112 bolt pattern with a 66.6mm center bore and a F 19x9J ET45 / R 19x11.5J ET46 wheel. Our flush reference for the Hamann Mercedes-Benz SLR Volcano is F 20x9.5J ET35 / R 21x12J ET40.; our maximum aggressive reference is F 20x10J ET30 / R 21x12.5J ET35. — beyond that, expect clearance issues against the fender liner without further modification.
Hamann Mercedes-Benz SLR Volcano OE Wheel Specs
The Hamann Mercedes-Benz SLR Volcano ships from the factory on 5x112 bolt pattern wheels with a 66.6mm center bore. The stock wheel size is F 19x9J ET45 / R 19x11.5J ET46, 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 Hamann Mercedes-Benz SLR Volcano owners run F 20x9.5J ET35 / R 21x12J ET40. 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 20x10J ET30 / R 21x12.5J ET35. Based on SLR McLaren. Wheels: Hamann Edition Race 21-inch staggered. Tires: 255/30 R21 F, 345/25 R21 R. Clearance should be verified before ordering, especially on lowered cars.
5-Tier Configuration Options
A – Factory-Style: 19x9J ET45
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: $$ (OE replacement)
B – Comfortable Upgrade: F 19.5x9.5J ET40 / R 20x12J ET43
Recommended setup: Direct bolt-on, factory suspension
Economy impact: Minimal
Best for: Owners who want a mild upgrade with no compromise
Appearance 6/10 | Comfort 9/10 | Install difficulty ★☆☆☆
Estimated cost range: $$ - $$$
C – Balanced / Flush Fit: F 20x9.5J ET35 / R 21x12J ET40
Recommended setup: Flush forged wheels, stock or mild lowering
Economy impact: Slight increase
Best for: Enthusiasts wanting a flush look daily
Appearance 8/10 | Comfort 7/10 | Install difficulty ★★☆☆
Estimated cost range: $$$
D – Aggressive: F 20x10J ET33 / R 21x12.5J ET38
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: $$$$
E – Max Aggressive: F 20x10J ET30 / R 21x12.5J ET35
Recommended setup: Based on SLR McLaren. Wheels: Hamann Edition Race 21-inch staggered. Tires: 255/30 R21 F, 345/25 R21 R.
Economy impact: Significant increase
Best for: Show builds, weekend cars
Appearance 10/10 | Comfort 3/10 | Install difficulty ★★★★
Estimated cost range: $$$$$
Performance Comparison Matrix
| Wheel Spec | Tier A | Tier B | Tier C | Tier D | Tier E |
|---|---|---|---|---|---|
| Wheel Spec | 19x9J ET45 | F 19.5x9.5J ET40 / R 20x12J ET43 | F 20x9.5J ET35 / R 21x12J ET40 | F 20x10J ET33 / R 21x12.5J ET38 | F 20x10J ET30 / R 21x12.5J ET35 |
| Economy Impact | None | Minimal | Slight increase | Noticeable increase | Significant increase |
| Appearance | 5/10 | 6/10 | 8/10 | 9/10 | 10/10 |
| Comfort | 10/10 | 9/10 | 7/10 | 5/10 | 3/10 |
| Install Difficulty | ★☆☆☆ | ★☆☆☆ | ★★☆☆ | ★★★☆ | ★★★★ |
| Cost Range | $$ (OE replacement) | $$ - $$$ | $$$ | $$$$ | $$$$$ |
| Best For | Daily drivers, warranty-conscious owners | Owners who want a mild upgrade with no compromise | Enthusiasts wanting a flush look daily | Show-and-drive builds | Show builds, weekend cars |
Real-World Reference Cases
The following builds are compiled from typical ANKUSI customer configurations for this platform and are illustrative, not individually verified real-world builds.
Case 1: Daily Driver (Factory-Style)
Profile: Commuter prioritizing comfort and reliability.
Setup: F 19x9J ET45 / R 19x11.5J ET46 forged wheels, factory suspension.
Cost: $$ (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 20x9.5J ET35 / R 21x12J ET40 forged wheels.
Cost: $$$
Outcome: Flush fitment with acceptable ride comfort for daily use.
Case 3: Show Build (Max Aggressive)
Profile: Show-and-shine build prioritizing stance over comfort.
Setup: F 20x10J ET30 / R 21x12.5J ET35 forged wheels. Based on SLR McLaren. Wheels: Hamann Edition Race 21-inch staggered. Tires: 255/30 R21 F, 345/25 R21 R.
Cost: $$$$$
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 19x9J ET45: backspacing ≈ 6.77"
- Flush 20x9.5J ET35: backspacing ≈ 6.63"
- Max 20x10J ET30: backspacing ≈ 6.68"
Use our offset & backspacing calculator to fine-tune your fitment, or contact ANKUSI for a custom forged wheel quote for your Hamann Mercedes-Benz SLR Volcano.