Mercedes G550d Overview
The Mercedes-Benz G550d is part of the W463 and W463A G-Class lineup, designed for luxury off-road performance. Known for its strong diesel torque and rugged 4WD system, proper tyre and wheel fitment is critical for both on-road comfort and off-road capability.
Factory Wheel & Tyre Specifications
Standard Factory Sizes (W463 / W463A)
18 Inch Setup (Base / Off-road focused):
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Tyre Size: 265/60R18
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Wheel Size: 7.5Jx18
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Offset (ET): +43
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Use Case: Off-road, comfort, better sidewall flex
19 Inch Setup (Mid spec):
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Tyre Size: 275/55R19
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Wheel Size: 8.5Jx19
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Offset (ET): +52
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Use Case: On road use, city driving
20 Inch Setup (AMG / High spec):
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Tyre Size: 275/50R20
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Wheel Size: 8.5Jx20
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Offset (ET): +32
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Use Case: Road comfort and styling
21 Inch Setup (Optional upgrade):
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Tyre Size: 275/45R21
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Wheel Size: 10.0Jx21
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Offset (ET): +33
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Use Case: Premium styling, reduced sidewall
Bolt Pattern (PCD)
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PCD: 5x130
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Stud Pattern: 5 Stud
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Thread Size: M14 x 1.5
This is consistent across most modern G-Class models and shared with other high-end Mercedes vehicles.
Centre Bore
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Centre Bore: 84.1 mm
Hub-centric fitment is critical on the G-Class due to vehicle weight. Always ensure wheels are either:
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Genuine Mercedes fitment, or
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Use correct hub rings when aftermarket wheels are installed
Wheel Nut / Bolt Torque Specification
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Torque Setting: 130-180 Nm (variance between years and trim levels, always check your exact torque spec
Important notes:
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Always torque using a calibrated torque wrench
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Re-check torque after 50–100 km
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Especially critical for off-road vehicles
Recommended Tyre Upgrades (Australia)
Highway / Comfort Driving
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Michelin Primacy SUV+
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Continental CrossContact LX Sport
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Pirelli Scorpion Verde
Performance SUV
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Michelin Pilot Sport 4 SUV
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Continental PremiumContact 6
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Pirelli P Zero
Off-Road / All-Terrain
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BFGoodrich All-Terrain KO2
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Falken Wildpeak AT3W / AT4W
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Yokohama Geolandar A/T G015
Plus Size & Common Upgrade Options
Popular upgrades for Mercedes G550d owners in Australia:
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275/55R20 (Direct upgrade from 19”)
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285/50R20 (More aggressive stance)
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285/55R20 (Off-road upgrade, may require minor clearance check)
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33” / 34” setups (Serious off-road builds)
Always consider:
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Guard clearance
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Speedometer accuracy
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Suspension setup
Fitment Tips from Autosport Tyreworld
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Stick close to OEM rolling diameter (±3%)
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Use load-rated tyres suitable for heavy SUVs
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Avoid cheap imports — quality tyres matter for safety and performance
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Wheel alignment is critical after upgrading tyre sizes
Why Choose Autosport Tyreworld
We specialise in premium tyre and wheel fitments for luxury SUVs like the Mercedes G-Class. Whether you want comfort, performance or off-road capability, our team can recommend the perfect setup.
Our Locations
Magill (SA)
647 Magill Road, Magill SA 5072
PH: 0452 641 023
Wingfield (SA)
411 Grand Junction Road, Wingfield SA 5013
PH: 0433 645 411
Clarence Gardens (SA)
911 South Road, Clarence Gardens SA 5039
PH: 0420 299 911