Overview
The Mercedes GLC63 S AMG is a high-performance SUV developed by AMG, featuring a 4.0L twin-turbo V8 and aggressive factory wheel and tyre configurations. Due to its performance-focused setup, correct tyre sizing, wheel fitment, and torque specifications are critical for safety, handling, and tyre longevity.
This guide covers all factory tyre sizes, wheel specifications, centre bore, and torque settings for the Mercedes GLC63 S AMG (X253 SUV and C253 Coupe variants).
Factory Tyre Sizes (All Variants)
Standard AMG Setup (Staggered)
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Front: 265/40R21
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Rear: 295/35R21
Optional / Alternative Factory Fitments
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265/45R20 (Front)
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295/40R20 (Rear)
Track / Performance Package (Select Markets)
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Front: 265/40R21
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Rear: 295/35R21
Factory Wheel (Rim) Specifications
20 Inch AMG Wheels
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Front: 9.5J x 20 ET32
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Rear: 10.0J x 20 ET24
21 Inch AMG Wheels
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Front: 9.5J x 21 ET32
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Rear: 10.0J x 21 ET24
Bolt Pattern (PCD)
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5 x 112
Centre Bore
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66.6 mm
Wheel Nut / Bolt Torque Specification
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Torque Setting: 150 Nm
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Thread Type: M14 x 1.5 (Mercedes OEM specification)
Always torque wheel bolts using a calibrated torque wrench and recheck after 50–100 km.
Tyre Pressure Recommendation (General Guide)
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Front: 36–38 PSI
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Rear: 38–42 PSI
(Always confirm via driver door placard depending on load and driving conditions.)
Recommended Tyres for Mercedes GLC63 S AMG
Max Performance (Street & Sport)
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Michelin Pilot Sport 4 SUV
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Continental SportContact 7
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Pirelli P Zero (PZ4)
Ultra High Performance (Balanced Driving)
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Continental MaxContact MC7
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Michelin Pilot Sport 5
Comfort + Performance SUV
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Continental PremiumContact 6
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Bridgestone Alenza 001
Fitment Notes
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The GLC63 S AMG runs a staggered setup, meaning front and rear tyres are different sizes and cannot be rotated front-to-rear.
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Always replace tyres in pairs (front or rear) or as a full set for optimal AWD performance.
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Ensure load rating and speed rating meet or exceed OEM specifications (typically Y-rated).
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Runflat tyres may be fitted from factory depending on region, but many owners upgrade to non-runflat for improved comfort and grip.
Common Upgrade Options
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21” to 22” wheel upgrades with 265/35R22 (front) and 305/30R22 (rear)
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Wider rear tyre upgrades for increased traction
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Lightweight forged wheels for performance improvement
(All upgrades must maintain overall rolling diameter within ±3%.)
Why Correct Fitment Matters
Incorrect tyre size or wheel offset can lead to:
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Rubbing issues
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Incorrect speedometer readings
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Reduced handling performance
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Increased tyre wear
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Potential drivetrain strain (especially AWD models)
Autosport Tyreworld – Your AMG Tyre Specialists
We supply and fit premium tyres and wheels tailored for high-performance vehicles like the Mercedes GLC63 S AMG.
Visit or contact us at:
647 Magill Road, Magill SA 5072
PH: 0452 641 023
411 Grand Junction Road, Wingfield SA 5013
PH: 0433 645 411
911 South Road, Clarence Gardens SA 5039
PH: 0420 299 911