🏁 Porsche Boxster S Tyre Size, Wheel Specs, PCD, Centre Bore & Torque Guide
🔧 Vehicle Overview
The Porsche Boxster S is a higher-performance version of the Boxster, offering more power, upgraded brakes, and sharper handling. Across all generations — 986, 987, 981, and 718 Boxster S — tyre selection is critical for:
✔ Grip and cornering performance
✔ Steering precision
✔ Ride comfort
📊 Factory Wheel & Fitment Specifications
🔩 Core Fitment Data (Boxster S – All Generations)
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Bolt Pattern (PCD): 5×130
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Centre Bore: 71.6 mm
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Wheel Bolt Thread: M14 × 1.5
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Wheel Nut Torque:
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986 / 987: 130 Nm
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981 / 718: 160 Nm
-
🛞 Factory Wheel Sizes & Offsets
🔹 Porsche Boxster S 986 (1999–2004)
| Position | Wheel Size | Offset |
|---|---|---|
| Front | 17x7 / 18x8 | ET55 |
| Rear | 17x8.5 / 18x9 | ET43–50 |
🔹 Porsche Boxster S 987 (2005–2012)
| Position | Wheel Size | Offset |
|---|---|---|
| Front | 18x8 | ET57 |
| Rear | 18x9 | ET43 |
🔹 Porsche Boxster S 981 (2013–2016)
| Position | Wheel Size | Offset |
|---|---|---|
| Front | 19x8.5 | ET57 |
| Rear | 19x9.5 | ET45 |
🔹 Porsche 718 Boxster S (2017–Present)
| Position | Wheel Size | Offset |
|---|---|---|
| Front | 19x8.5 / 20x8.5 | ET57 |
| Rear | 19x9.5 / 20x10.5 | ET45 |
📌 All Boxster S models use staggered wheel setup
📏 Factory Tyre Sizes
🔹 Boxster S 986
-
Front: 205/50R17 / 225/40R18
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Rear: 255/40R17 / 265/35R18
🔹 Boxster S 987
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Front: 235/40R18
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Rear: 265/40R18
🔹 Boxster S 981
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Front: 235/40R19
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Rear: 265/40R19
🔹 718 Boxster S
19 Inch:
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235/40R19 (Front)
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265/40R19 (Rear)
20 Inch:
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235/35R20 (Front)
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265/35R20 (Rear)
⚙️ Recommended Tyres (Australia)
🔥 Best Daily Performance (Recommended)
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Michelin Pilot Sport 4S (N-rated)
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Continental SportContact 7
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Pirelli P Zero (PZ4 Porsche spec)
✔ Excellent grip
✔ Balanced comfort
✔ Ideal for daily driving
🏁 Performance Driving
-
Michelin Pilot Sport 4S
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Continental SportContact 7
✔ Strong cornering performance
✔ Precise steering feel
🏁 Track Setup (Optional)
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Michelin Pilot Sport Cup 2
✔ Maximum grip
✔ Track-ready performance
🔇 Comfort Option
-
Continental MaxContact MC7
✔ Lower road noise
✔ Improved comfort
⚙️ Aftermarket Upgrade Guide
✔ OEM+ Setup (Recommended)
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Maintain factory tyre sizes
✔ Best handling balance
✔ 20” Upgrade (981 / 718)
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235/35R20 + 265/35R20
✔ Sharper handling
✔ Improved aesthetics
✔ Comfort Setup
-
Touring-performance tyres
✔ Better ride quality
✔ Reduced noise
⚠️ Critical Fitment Notes
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Boxster S is mid-engine → sensitive to tyre balance
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Staggered setup = NO front-to-rear rotation
✔ Always use matched tyre brands and patterns
❌ Incorrect tyres may:
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Affect handling
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Reduce grip
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Increase uneven wear
✔ Recommend N-rated tyres
🛠️ Torque & Installation Guide
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986 / 987: 130 Nm
-
981 / 718: 160 Nm
✔ Re-torque after 50–100 km
✔ Always use torque wrench
🏪 Why Choose Autosport Tyreworld?
At Autosport Tyreworld, we specialise in Porsche performance vehicles:
✔ Boxster S fitment expertise
✔ Correct staggered setup advice
✔ Premium tyre brands available
✔ Precision balancing & alignment
📍 Visit Our Stores
AUTOSPORT TYREWORLD
📍 647 Magill Road, Magill SA 5072
📞 0452 641 023
📍 411 Grand Junction Road, Wingfield SA 5013
📞 0433 645 411
📍 911 South Road, Clarence Gardens SA 5039
📞 0420 299 911