BR Wheels-Style Mirror Polished Directional 5-Spoke 2-Piece Forged Wheels
2-Piece · Mirror Polished
1957 Porsche 356 Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Porsche 356 wheels? This page gives the 1957 Porsche 356 bolt pattern, centre bore, factory rim size and the offset range for aftermarket and forged Porsche 356 rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 1957 Porsche 356 uses a 5x205 ("Wide-Five") bolt pattern and M12x1.5 lug nuts. Factory wheels: 15x4.5J at ET25.
Forged wheels for the 1957 Porsche 356 — drilled 5x205 ("Wide-Five"), built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Porsche 356 (1957): 5x205 ("Wide-Five") bolt pattern. Factory wheels: 15x4.5J at ET25. Flush and max fitment confirmed on request.
Bolt Pattern5x205 ("Wide-Five")
Wheel Bolt/NutM12x1.5 Nut (vintage VW-derived stud)
Center BoreLug-centric (Wide-Five hub, no conventional bore spec)
Wheel Load Rating450–550 kg/wheel (Classic Sports Car segment reference)
Caliper TypeDrum brakes, all four corners (OEM, Porsche 356)
Year1957
CategoryClassic Sports Car
Data check: the bolt pattern and center bore on this page have not yet been confirmed by a second independent source. Measure your hub or ask us before ordering. How we verify
Forged Wheel Designs for the Porsche 356
Every design below is forged to order, so it can be machined to the Porsche 356's bolt pattern, with the width and offset calculated for your setup.
Gloss Black 10 Y-Spoke Decorative Ring Forged Wheels
Monoblock · Gloss Black
Porsche OEM-Style Gray / Silver 5-Spoke Classic Forged Wheels
Monoblock · Matte Silver
Bright Silver Multi-Spoke Machined Face Forged Wheels
Monoblock · Bright Silver
Porsche OEM-Style Gloss Black Machined 5-Spoke Polished Lip Forged Wheels
Monoblock · Gloss Black / Machined
Porsche GT4 Style Gold 5 Y-Spoke Concave Forged Wheels
Concave · Gold
Advan-Style Metallic Gray 5-Spoke Forged Wheels
Monoblock · Metallic Gray
Gloss Black Windowed Dish Forged Wheels
Monoblock · Gloss Black
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
The Porsche 356 predates the 5x130 pattern used on every later Porsche in our catalogue — it left the factory on the vintage VW-derived 'Wide-Five' 5x205mm bolt pattern, a lug-centric fitment built around drum brakes rather than a conventional hub-centric bore. There is no large modern forged-wheel aftermarket publishing verified Flush or Maximum Aggressive offset data for this pattern the way there is for a mainstream 5x114.3 or 5x130 platform, so we are not inventing numbers for it.
The 356 runs a 5x205 Wide-Five bolt pattern and a 15x4.5J wheel from the factory, a size still sold today by period-correct restoration suppliers. Because the Wide-Five hub is lug-centric rather than bore-centric, ANKUSI forges to your confirmed lug circle and offset target rather than publishing a generic center bore figure that would not apply the same way it does on a modern hub.
Porsche 356 OE Wheel Specs
The 1957 Porsche 356 (Classic Sports Car) uses a 5x205 ("Wide-Five") bolt pattern. Factory wheels are 15x4.5J at ET25.
Why the factory spec works for most owners:
- Matches the vehicle's intended use case and factory-engineered load capacity
- A known, correct fitment with no clearance guesswork
- Preserves the correct period-correct stance for concours and restoration builds
- Provides stable, predictable handling on narrow vintage tires
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Porsche 356 (1957) we machine every wheel to the vehicle’s own hub dimensions 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.
Aftermarket Fitment: Confirmed on Request
We are still verifying real-world Flush and Maximum Aggressive reference fitments for the Wide-Five pattern from owner and restoration communities, so we are not publishing offset ranges yet rather than guessing. Contact ANKUSI now with your target look, tire size and lug circle confirmation and we will confirm a custom-offset forged wheel build for your Porsche 356 directly.
Porsche 356: Specs by Model Year
| Year | Bolt pattern | Center bore | Factory wheel |
|---|---|---|---|
| 1948 | — | — | 16x3J |
| 1957 | — | — | 15x4.5J ET25 |
Bolt pattern and center bore stay the same across all 2 model years in our database (1948–1957).
Frequently Asked Questions
What bolt pattern (PCD) does the Porsche 356 use?
The 356 uses the vintage 5x205mm 'Wide-Five' bolt pattern, not the 5x130 pattern found on later Porsches.
What is the center bore size on the Porsche 356?
The Wide-Five hub is lug-centric rather than bore-centric, so there is no single published hub-centric bore figure the way there is on modern wheels; ANKUSI forges to your confirmed lug circle and offset instead.
What size are the factory (stock) wheels on the Porsche 356?
Factory wheels on the 356 are 15x4.5J at ET25.
Do I need wheel spacers for my Porsche 356?
No. ANKUSI forges each wheel to your exact target offset, so you get the correct fitment without stacking spacers.
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).
Other cars on the same factory size: 15x4.5 wheels · 15 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.
Bolt pattern and center bore on this page come from published fitment references and are still awaiting a second independent check. Last reviewed 2026-09-18. Spotted an error? Email info@ankusi.com and we will verify and correct it.