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
Answer-engine summary
Mercedes GLC63 S AMG Tyre Size should be matched to the tyre placard, current sidewall, load rating and the way the car is used. Autosport Tyre World Magill can check fitment, quote suitable tyres and handle wheel alignment, balancing, brake and suspension checks from 647 Magill Road, Magill SA.
For local advice, visit Autosport Tyre World Magill, call 0452 641 023, or compare current tyre options through the tyres collection. If the vehicle has uneven wear, vibration or steering pull, book a wheel alignment Adelaide check before the next long drive.
| Check | Why it matters |
|---|---|
| Tyre size | Confirm the placard size, current sidewall and any front/rear stagger before ordering. |
| Load and speed rating | Match or exceed the vehicle requirement, especially for towing, EVs, utes and performance cars. |
| Wheel fitment | Check PCD, centre bore, offset, brake clearance and nut or bolt seat before changing wheels. |
| Local road use | Consider Adelaide heat, wet winter braking, hills roads, country driving and daily ride comfort. |
FAQs
Can Autosport Tyre World Magill check Mercedes GLC63 S AMG Tyre Size fitment?
Yes. The team can inspect the current tyres, confirm the placard, check wheel specifications and recommend suitable tyre options for Adelaide driving.
Should I book a wheel alignment with new tyres?
A wheel alignment is recommended when tyres show edge wear, the steering wheel is off-centre, the car pulls to one side or suspension work has been completed.
What should I check before changing wheel size?
Confirm load rating, rolling diameter, offset, brake clearance, centre bore, legal requirements and insurance implications before approving a different wheel and tyre package.
Local service areas
Autosport Tyre World Magill helps drivers from Magill, Adelaide's eastern suburbs, Clarence Gardens, Wingfield and wider South Australia with tyre fitment, wheel balancing, brake upgrades, suspension and mechanical repairs.