2009 Wald Mercedes-Benz SL-Class R230 Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Wald Mercedes-Benz SL-Class R230 wheels? This page gives the 2009 Wald Mercedes-Benz SL-Class R230 bolt pattern (5x112), centre bore, factory rim size and the offset range for aftermarket and forged Wald Mercedes-Benz SL-Class R230 rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2009 Wald Mercedes-Benz SL-Class R230 uses a 5x112 bolt pattern with a 66.6 mm centre bore and M14x1.5 lug bolts. For aftermarket wheels, 20x9J ET30 front / 20x10.5J ET35 rear sits flush.
Forged wheels for the 2009 Wald Mercedes-Benz SL-Class R230 — 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.
Get a quote for this car
Wald Mercedes-Benz SL-Class R230 (2009): 5x112 bolt pattern, 66.6mm center bore, OE F 18x8.5J ET35 / R 18x9.5J ET40. Forged wheel fitment specs from ANKUSI.
Bolt Pattern5x112
Wheel Bolt/NutM14x1.5 Bolt
Center Bore66.6mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year2009
Category5-Lug Performance / Tuner
✓ 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 20x9J ET30 / R 20x10.5J ET35 |
Forged Wheel Designs for the Wald Mercedes-Benz SL-Class R230
Every design below is forged to order, so it can be machined to the Wald Mercedes-Benz SL-Class R230's 5x112 bolt pattern and 66.6 mm center bore, with the width and offset calculated for your setup.
Gunmetal Directional 10-Spoke Forged Wheels
Monoblock · Gunmetal
Edelweiss-Style LT3 Matte Silver 5 Y-Spoke Forged Wheels
Replica · Matte Silver
Polished Full-Face Deep Lip Mirror Polished Forged Wheels
Deep Dish · Polished
Gloss Black 5 W-Spoke Forged Wheels
Monoblock · Gloss Black
BBS-Style Silver LM-Style Cross-Spoke 2-Piece Polished Lip Forged Wheels
2-Piece · Silver / Polished Lip
ABT-Style Bronze 10 Y-Spoke Forged Wheels
Monoblock · Bronze
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
Most of the engineering value in a forged wheel over a cast one shows up in rotational mass, not outright strength — both can meet the same load rating, but the forged piece gets there lighter. On a sedan platform tuned for everyday balance, that weight saving is felt directly in steering response and ride quality.
The Wald Mercedes-Benz SL-Class R230 ships from the factory on a 5x112 bolt pattern with a 66.6mm center bore and a F 18x8.5J ET35 / R 18x9.5J ET40 wheel. Our flush reference for the Wald Mercedes-Benz SL-Class R230 is F 20x9J ET30 / R 20x10.5J ET35.; our maximum aggressive reference is F 20x9.5J ET25 / R 20x11.5J ET30. — beyond that, expect clearance issues against the fender liner without further modification.
Wald Mercedes-Benz SL-Class R230 OE Wheel Specs
The Wald Mercedes-Benz SL-Class R230 ships from the factory on 5x112 bolt pattern wheels with a 66.6mm center bore. The stock wheel size is F 18x8.5J ET35 / R 18x9.5J ET40, 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 Wald Mercedes-Benz SL-Class R230 (2009) 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 and Backspacing: Factory Wheel vs Options
Backspacing ≈ width/2 + ET/25.4 + 0.5 in. "Inward" means closer to the suspension; "outward" means closer to the fender lip.
| Setup | Size | ET | Backspacing | Inward vs OE | Outward vs OE |
|---|---|---|---|---|---|
| Factory (OE) | 18x8.5J | ET35 | 6.13 in (156 mm) | — | — |
| Flush | 20x9J | ET30 | 6.18 in (157 mm) | +1 mm | +11 mm |
| Maximum | 20x9.5J | ET25 | 6.23 in (158 mm) | +3 mm | +23 mm |
Vehicles With the Same Hub as the Wald Mercedes-Benz SL-Class R230 (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 Wald Mercedes-Benz SL-Class R230 use?
The 2009 Wald Mercedes-Benz SL-Class R230 uses a 5x112 bolt pattern.
How many lug bolts does the Wald Mercedes-Benz SL-Class R230 use?
The Wald Mercedes-Benz SL-Class R230 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 Wald Mercedes-Benz SL-Class R230?
The Wald Mercedes-Benz SL-Class R230'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 Wald Mercedes-Benz SL-Class R230?
For a flush look with minimal to no rubbing, we recommend F 20x9J ET30 / R 20x10.5J ET35 as a starting point on a stock or mildly lowered Wald Mercedes-Benz SL-Class R230.
Do I need wheel spacers for my Wald Mercedes-Benz SL-Class R230?
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 Wald Mercedes-Benz SL-Class R230?
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 6.18" backspacing up front and 7.13" 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 Wald Mercedes-Benz SL-Class R230?
Yes — the Wald Mercedes-Benz SL-Class R230'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.
Sources and Last Update
Data checked against: avtoreference.com, tirewheelguide.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Other cars on the same factory size: 18x8.5 wheels · 18 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.