Porsche OEM-Style Gray / Silver 5-Spoke Classic Forged Wheels
Monoblock · Matte Silver
2017-2019 Porsche 911 R Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Porsche 911 R wheels? This page gives the 2017-2019 Porsche 911 R bolt pattern, centre bore, factory rim size and the offset range for aftermarket and forged Porsche 911 R rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Porsche 911 R (2017-2019): Centerlock bolt pattern, 71.6mm center bore. Factory wheels: F: 20x9.0J R: 20x12.0J. Reference fitment ranges.
Bolt PatternCenterlock
Wheel Bolt/NutCentre-lock single nut (600 Nm, 3/4in drive)
Center Bore71.6mm
Wheel Load Rating650–750 kg/wheel (Standard Passenger Car segment reference)
Caliper TypeFixed 4-piston caliper, all four corners (OEM, Porsche)
Year2017-2019
CategoryRoadster
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
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Flush Fitment | F 20x9.0J ET47 / R 20x12.0J ET47 |
| Maximum Aggressive | F 20x9.5J ET45 / R 20x12.0J ET44 |
Forged Wheel Designs for the Porsche 911 R
Every design below is forged to order, so it can be machined to the Porsche 911 R's bolt pattern and 71.6 mm center bore, with the width and offset calculated for your setup.
Gloss Black Mesh 2-Piece Polished Deep Lip Forged Wheels
2-Piece · Gloss Black
Gloss Black Mesh Deep Lip Forged Wheels
Deep Dish · Gloss Black
Porsche OEM-Style Gunmetal 10-Spoke Forged Wheels
Monoblock · Gunmetal
Brushed Silver 10 Split-Spoke Forged Wheels
Monoblock · Brushed Silver
APEX-Style Bright Silver Mesh Deep-Lip Forged Wheels
Deep Dish · Bright Silver
Gloss Black 10 Y-Spoke Forged Wheels
Monoblock · Gloss Black
Porsche OEM-Style Gloss Black Center-Lock Petal Machined Face Forged Wheels
Center-Lock · Gloss Black
See all Porsche 911 wheel designs Porsche OEM-Style Forged Wheels
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
With less structural stiffness from the missing roof, a convertible's suspension tuning leans more heavily on unsprung mass control. Forged construction keeps wheel weight down at the same strength rating, which is one less variable working against the Porsche 911 R's chassis.
The Porsche 911 R runs a Centerlock bolt pattern, 71.6mm center bore, and a F: 20x9.0J wheel from the factory. Our Flush Fitment reference is F 20x9.0J ET47 / R 20x12.0J ET47, which tucks the tire under the fender lip on a stock-height Porsche 911 R. Our Maximum Aggressive reference is F 20x9.5J ET45 / R 20x12.0J ET44 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Porsche 911 R OE Wheel Specs
The 2017-2019 Porsche 911 R (Roadster) uses a Centerlock bolt pattern with a 71.6mm center bore. Factory wheels are F: 20x9.0J R: 20x12.0J.
Why the factory spec works for most owners:
- Balances ride comfort with everyday drivability
- A commonly used size for this vehicle class, supporting parts and tire availability
- Maintains clearance for the factory suspension and brake components
- Provides stable, predictable handling across normal driving conditions
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Porsche 911 R (2017-2019) we 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.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: F 20x9.0J ET45 → ~6.77″ F backspacing, R 20x12.0J ET45 → ~8.27″ R backspacing
- Flush: F 20x9.0J ET47 → ~6.85″ F backspacing, R 20x12.0J ET47 → ~8.35″ R backspacing
- Max: F 20x9.5J ET45 → ~7.02″ F backspacing, R 20x12.0J ET44 → ~8.23″ 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 911 R? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Frequently Asked Questions
What is the center bore size on the Porsche 911 R?
The Porsche 911 R'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 is the biggest wheel size I can fit on my Porsche 911 R without rubbing?
The most aggressive fitment we recommend without fender work is F 20x9.5J ET45 / R 20x12.0J ET44. 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 911 R?
For a flush look with minimal to no rubbing, we recommend F 20x9.0J ET47 / R 20x12.0J ET47 as a starting point on a stock or mildly lowered Porsche 911 R.
Do I need wheel spacers for my Porsche 911 R?
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 911 R?
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 6.85" backspacing up front and 8.35" 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 911 R?
Yes — the Porsche 911 R'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.