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2004 Mercedes-Benz SLK55 AMG F1 Safety Car Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Mercedes-Benz SLK55 AMG F1 Safety Car wheels? This page gives the 2004 Mercedes-Benz SLK55 AMG F1 Safety Car bolt pattern (5x112), centre bore, factory rim size and the offset range for aftermarket and forged Mercedes-Benz SLK55 AMG F1 Safety Car rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2004 Mercedes-Benz SLK55 AMG F1 Safety Car uses a 5x112 bolt pattern with a 66.6 mm centre bore and M14x1.5 lug bolts. For aftermarket wheels, 19x8.5J ET32 front / 19x9.5J ET38 rear sits flush.
Forged wheels for the 2004 Mercedes-Benz SLK55 AMG F1 Safety Car — drilled 5x112 with a 66.6 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Mercedes-Benz SLK55 AMG F1 Safety Car (2004): 5x112 bolt pattern, 66.6mm center bore, OE F 18x7.5J ET37 / R 18x8.5J ET37.
Bolt Pattern5x112
Wheel Bolt/NutM14x1.5 Bolt
Center Bore66.6mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Caliper TypeBrembo 4-piston fixed front / 2-piston floating rear (OEM, AMG)
Year2004
Category5-Lug Standard Sedan
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Flush Fitment | F 19x8.5J ET32 / R 19x9.5J ET38 |
Forged Wheel Designs for the Mercedes-Benz SLK55 AMG F1 Safety Car
Every design below is forged to order, so it can be machined to the Mercedes-Benz SLK55 AMG F1 Safety Car's 5x112 bolt pattern and 66.6 mm center bore, with the width and offset calculated for your setup.
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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
A sedan's wheel spec is a balance point the factory tuned between ride comfort, steering feel, and everyday durability. Forging lets us hold that same structural margin while cutting rotational mass, which is where most of the real-world benefit — quicker steering response, marginally better ride — actually comes from.
The Mercedes-Benz SLK55 AMG F1 Safety Car ships from the factory on a 5x112 bolt pattern with a 66.6mm center bore and a F 18x7.5J ET37 / R 18x8.5J ET37 wheel. Our flush reference for the Mercedes-Benz SLK55 AMG F1 Safety Car is F 19x8.5J ET32 / R 19x9.5J ET38.; our maximum aggressive reference is F 20x9J ET28 / R 20x10J ET32. — beyond that, expect clearance issues against the fender liner without further modification.
Mercedes-Benz SLK55 AMG F1 Safety Car OE Wheel Specs
The Mercedes-Benz SLK55 AMG F1 Safety Car ships from the factory on 5x112 bolt pattern wheels with a 66.6mm center bore. The stock wheel size is F 18x7.5J ET37 / R 18x8.5J ET37, 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.
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Mercedes-Benz SLK55 AMG F1 Safety Car (2004) we drill the 5x112 pattern and cut the centre bore to 66.6mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 10,093 vehicles, free to download, CC BY 4.0.
Offset & Backspacing Reference
Backspacing is calculated as: wheel width (in) / 2 + offset (mm) / 25.4 + 0.5.
- OE 18x7.5J ET37: backspacing ≈ 5.71"
- Flush 19x8.5J ET32: backspacing ≈ 6.01"
- Max 20x9J ET28: backspacing ≈ 6.1"
Use our offset & backspacing calculator to fine-tune your fitment, or contact ANKUSI for a custom forged wheel quote for your Mercedes-Benz SLK55 AMG F1 Safety Car.
Vehicles With the Same Hub as the Mercedes-Benz SLK55 AMG F1 Safety Car (5x112, 66.6 mm Bore)
In our database, 823 other vehicle entries from 21 makes use exactly the same 5x112 bolt pattern and 66.6 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
5x112 is used by 21.6% of the vehicle pages in our English fitment guide (1,407 of 6,503); 58.6% of those also use a 66.6 mm center bore.
Hub-Centric Rings for a 66.6 mm Center Bore
A wheel with a center bore larger than 66.6 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 67.1 mm | 67.1 → 66.6 mm |
| 70.1 mm | 70.1 → 66.6 mm |
| 70.5 mm | 70.5 → 66.6 mm |
| 71.6 mm | 71.6 → 66.6 mm |
| 73.1 mm | 73.1 → 66.6 mm |
ANKUSI forged wheels are bored to exactly 66.6 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Mercedes-Benz SLK55 AMG F1 Safety Car use?
The 2004 Mercedes-Benz SLK55 AMG F1 Safety Car uses a 5x112 bolt pattern.
How many lug bolts does the Mercedes-Benz SLK55 AMG F1 Safety Car use?
The Mercedes-Benz SLK55 AMG F1 Safety Car uses a 5-lug bolt pattern (5x112), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Mercedes-Benz SLK55 AMG F1 Safety Car?
The Mercedes-Benz SLK55 AMG F1 Safety Car's center bore is 66.6mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What does a flush wheel fitment look like on the Mercedes-Benz SLK55 AMG F1 Safety Car?
For a flush look with minimal to no rubbing, we recommend F 19x8.5J ET32 / R 19x9.5J ET38 as a starting point on a stock or mildly lowered Mercedes-Benz SLK55 AMG F1 Safety Car.
Do I need wheel spacers for my Mercedes-Benz SLK55 AMG F1 Safety Car?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my Mercedes-Benz SLK55 AMG F1 Safety Car?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 6.01" backspacing up front and 6.75" in the rear.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my Mercedes-Benz SLK55 AMG F1 Safety Car?
Yes — the Mercedes-Benz SLK55 AMG F1 Safety Car's factory and our recommended flush/max fitments already use staggered sizing (different width front and rear), and ANKUSI can forge matching staggered sets to your target offsets.
Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M14x1.5, ball-seat lug bolt.
Factory Torque Spec: 130 Nm (96 ft-lb). Sedan/coupe platforms (E-Class, CLS, SL and similar) generally use the shorter 27mm bolt at this spec.
TPMS: Vehicles built before the 2008 model year were not federally required to carry factory TPMS in the US, though many manufacturers adopted it earlier; verify whether your specific build has TPMS before ordering sensor-compatible wheels.
Tire Pressure: Always set tire pressure to the value on your vehicle's tire placard (driver's doorjamb or glovebox), not the max PSI printed on the tire sidewall — this is trim- and tire-size-specific and stays the same reference point when you switch to a different wheel and tire combination.
Reference data compiled from published OEM service specifications and cross-checked against independent repair sources; always confirm against your owner's manual or door-jamb placard before installation.
Sources and Last Update
Data checked against: avtoreference.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.