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1980 Porsche 924 Turbo Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Porsche 924 Turbo wheels? This page gives the 1980 Porsche 924 Turbo bolt pattern (5x130), centre bore, factory rim size and the offset range for aftermarket and forged Porsche 924 Turbo rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 1980 Porsche 924 Turbo uses a 5x130 bolt pattern with a 71.6 mm centre bore and M14x1.5 lug bolts. Factory wheels: F: 15x6J R: 15x6J. For aftermarket wheels, 16x7J ET23 sits flush and 16x8J ET15 is the most aggressive fit.
Forged wheels for the 1980 Porsche 924 Turbo — drilled 5x130 with a 71.6 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Porsche 924 Turbo (1980): 5x130 bolt pattern, 71.6mm center bore. Factory wheels: F: 15x6J R: 15x6J. Reference fitment ranges.
Bolt Pattern5x130
Wheel Bolt/NutM14x1.5 Bolt
Center Bore71.6mm
Wheel Load Rating600–700 kg/wheel (Classic Sports Car segment reference)
Caliper TypeVented front disc brakes, M471 big-brake package (OEM, Porsche 924 Turbo)
Year1980
CategorySports Coupe
✓ 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 |
|---|---|
| Factory (OE) | F: 15x6J R: 15x6J |
| Flush Fitment | F 16x7J ET23 / R 16x7J ET23 |
| Maximum Aggressive | F 16x8J ET15 / R 16x8J ET15 |
Forged Wheel Designs for the Porsche 924 Turbo
Every design below is forged to order, so it can be machined to the Porsche 924 Turbo's 5x130 bolt pattern and 71.6 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
Coupes and performance platforms are where rotational mass shows up fastest — in acceleration, in braking, and in how quickly the chassis changes direction. Forging lets us build to the same strength spec as the factory wheel at a meaningfully lower rotational weight, which is where the performance gain actually comes from, not just the visual one.
The Porsche 924 Turbo runs a 5x130 bolt pattern, 71.6mm center bore, and a F: 15x6J wheel from the factory. Our Flush Fitment reference is F 16x7J ET23 / R 16x7J ET23, which tucks the tire under the fender lip on a stock-height Porsche 924 Turbo. Our Maximum Aggressive reference is F 16x8J ET15 / R 16x8J ET15 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Porsche 924 Turbo OE Wheel Specs
The 1980 Porsche 924 Turbo (Sports Coupe) uses a 5x130 bolt pattern with a 71.6mm center bore. Factory wheels are F: 15x6J R: 15x6J.
Why the factory spec works for most owners:
- Keeps unsprung weight low to preserve the factory handling balance
- Matches the wider, performance-oriented tire sizing typical of this platform
- Maintains clearance for the factory brake package and suspension geometry
- Balances grip with ride comfort for daily and spirited driving
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Porsche 924 Turbo (1980) we drill the 5x130 pattern and cut the centre bore to 71.6mm 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.
Real-World Fitment Notes
The M471 big-brake package swaps the base car's 4x108 hub for the 5x130 pattern shared with the 944/928/968, opening up a much wider range of forged wheel options; 16x7 Clubsport-style wheels are a well-documented direct-fit upgrade in the 924/944 owner community.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: F 15x6J ET23 → ~4.41″ F backspacing, R 15x6J ET23 → ~4.41″ R backspacing
- Flush: F 16x7J ET23 → ~4.91″ F backspacing, R 16x7J ET23 → ~4.91″ R backspacing
- Max: F 16x8J ET15 → ~5.09″ F backspacing, R 16x8J ET15 → ~5.09″ R backspacing
A Note on Clearance
Final clearance depends on the exact tire model, suspension height, brake package, alignment and vehicle tolerances. A physical test fit is recommended before production.
Want to check a different width or offset before you order? Use our Offset & Backspacing Calculator to solve the numbers yourself, or looking for your exact Porsche spec, or want a wheel built to a custom offset for your Porsche 924 Turbo? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Vehicles With the Same Hub as the Porsche 924 Turbo (5x130, 71.6 mm Bore)
In our database, 294 other vehicle entries from 10 makes use exactly the same 5x130 bolt pattern and 71.6 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.
5x130 is used by 5.8% of the vehicle pages in our English fitment guide (375 of 6,503); 78.7% of those also use a 71.6 mm center bore.
Hub-Centric Rings for a 71.6 mm Center Bore
A wheel with a center bore larger than 71.6 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 72.6 mm | 72.6 → 71.6 mm |
| 73.1 mm | 73.1 → 71.6 mm |
| 74.1 mm | 74.1 → 71.6 mm |
| 76.1 mm | 76.1 → 71.6 mm |
ANKUSI forged wheels are bored to exactly 71.6 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Porsche 924 Turbo use?
The 1980 Porsche 924 Turbo uses a 5x130 bolt pattern.
How many lug bolts does the Porsche 924 Turbo use?
The Porsche 924 Turbo uses a 5-lug bolt pattern (5x130), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Porsche 924 Turbo?
The Porsche 924 Turbo's center bore is 71.6mm. 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 size are the factory (stock) wheels on the Porsche 924 Turbo?
Factory wheels on the Porsche 924 Turbo are F: 15x6J R: 15x6J.
What is the biggest wheel size I can fit on my Porsche 924 Turbo without rubbing?
The most aggressive fitment we recommend without fender work is F 16x8J ET15 / R 16x8J ET15. Going beyond this typically causes rubbing under compression unless you roll the fenders or add camber correction.
What does a flush wheel fitment look like on the Porsche 924 Turbo?
For a flush look with minimal to no rubbing, we recommend F 16x7J ET23 / R 16x7J ET23 as a starting point on a stock or mildly lowered Porsche 924 Turbo.
Do I need wheel spacers for my Porsche 924 Turbo?
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 Porsche 924 Turbo?
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 4.91" backspacing up front and 4.91" 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 Porsche 924 Turbo?
Yes — the Porsche 924 Turbo'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.
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: 15x6 wheels · 15 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.