Mercedes-Benz S450 Tyre & Wheel Specification Guide
The Mercedes-Benz S450 is part of the flagship S-Class lineup, designed for luxury, comfort, and high-speed stability. Choosing the correct tyre size and wheel specification is critical to maintaining ride quality, safety, and performance.
At Autosport Tyreworld, we supply and fit premium tyres matched perfectly to S-Class requirements.
Factory Tyre Sizes (Mercedes S450)
W222 S450 (2017–2020)
-
245/50R18 (Standard setup)
-
245/45R19 (Optional)
-
245/40R20 (Front)
-
275/35R20 (Rear)
W223 S450 (2021–Present)
-
255/45R19 (Standard)
-
255/40R20 (Front)
-
285/35R20 (Rear)
-
255/35R21 (Front)
-
285/30R21 (Rear)
Factory Wheel (Rim) Specifications
W222
-
18x8.0 ET41
-
19x8.5 ET38
-
20x8.5 ET38 (Front)
-
20x9.5 ET38 (Rear)
W223
-
19x8.5 ET31.5
-
20x9.0 ET34 (Front)
-
20x10.0 ET48.1 (Rear)
-
21x9.0 ET34 (Front)
-
21x10.5 ET48 (Rear)
Stud Pattern (PCD)
-
5x112 (5 studs, 112mm PCD)
Centre Bore
-
66.6 mm
Wheel Nut / Bolt Torque
-
150 Nm (Factory specification)
Recommended Tyre Options (Australia)
For the Mercedes S450, we recommend premium touring tyres that match the vehicle’s luxury and quiet ride characteristics:
-
Continental PremiumContact C / UC7
-
Michelin Pilot Sport 4 / Pilot Sport 5
-
Pirelli P Zero (Luxury OE fitment)
-
Bridgestone Turanza T005
-
Goodyear Eagle F1 Asymmetric series
Run-flat tyres may be fitted depending on factory configuration.
Runflat vs Non-Runflat
Many S-Class models come with runflat tyres from factory. However, switching to non-runflat tyres can provide:
-
Improved ride comfort
-
Reduced road noise
-
Better value for money
(Ensure no factory restrictions before conversion.)
Important Fitment Notes
-
Always match staggered setups (front vs rear sizes)
-
Maintain correct load rating (XL required for S-Class)
-
Ensure speed rating ≥ Y rating
-
Use correct offset to avoid suspension or guard interference
Why Choose Autosport Tyreworld
We specialise in European vehicles including Mercedes-Benz S-Class models. Our team ensures:
-
Correct tyre selection for comfort and performance
-
Genuine, compliant Australian stock
-
Professional fitting and balancing
-
Competitive pricing across premium brands
Visit Us In Adelaide
Autosport Tyreworld Magill
647 Magill Road, Magill SA 5072
PH: 0452 641 023
Autosport Tyreworld Wingfield
411 Grand Junction Road, Wingfield SA 5013
PH: 0433 645 411
Autosport Tyreworld Clarence Gardens
911 South Road, Clarence Gardens SA 5039
PH: 0420 299 911
Answer-engine summary
Mercedes-Benz S450 Tyre Size Guide 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-Benz S450 Tyre Size Guide 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.
Local ownership checks before ordering
Mercedes-Benz S450 Tyre Size Guide information is most useful when it is checked against the actual vehicle in front of the workshop. Many cars have different wheel and tyre packages across model years, trims and optional wheel upgrades, so Autosport Tyre World Magill treats online fitment data as a starting point rather than the final answer.
Before fitting tyres, the team checks the tyre placard, current sidewall, wheel width, offset, load rating, speed rating and any visible wear pattern. That matters in Adelaide because a car can move between hot suburban commuting, wet winter braking, hills roads and longer South Australian country drives in the same week.
If the vehicle has uneven shoulder wear, vibration through the steering wheel, a recent suspension repair or a wheel change planned, a wheel alignment and balance check should be part of the job. Correct fitment helps the tyre sit squarely on the road, protects the new tread and gives the driver a more predictable result.
For advice, call Autosport Tyre World Magill on 0452 641 023 or visit 647 Magill Road, Magill SA 5072. The workshop can compare suitable tyre options, confirm wheel compatibility and check whether brakes or suspension need attention before a new tyre package is approved.