Tire Size Specification
Verified OEM & Service Reference2021 Mercedes Benz C Class C 300 2.0L Turbo (W205) — Tire Size
Recommended interval: Rotate every 5,000–7,500 miles; check cold PSI monthly
Engine / Trim Variant
Factory Tire Size
225/45R18
Rear Factory Size
245/40R18
Technical Specifications
| Front Tire Size | 225/45R18 |
|---|---|
| Rear Tire Size | 245/40R18 |
| Rim / Wheel Size | 18" |
| Matched Trims | 4MATIC Cabriolet, 4MATIC Coupe, 4MATIC Sedan |
Compatible Aftermarket Options
Direct OEM cross-references- Buy Michelin / Continental / Pirelli 225/45R18 on AmazonMichelin / Continental / Pirelli225/45R18Front
Search query: 225/45R18 tire
- Buy Michelin / Continental / Pirelli 245/40R18 on AmazonMichelin / Continental / Pirelli245/40R18Rear
Search query: 245/40R18 tire
DIY Fitment & Verification Checklist for 2021 Mercedes Benz C Class
- Confirm your engine code or trim variant above before ordering parts, as mid-year production changes can affect tire size fitment.
- When purchasing OEM or aftermarket brands (Motorcraft, ACDelco, Mopar, Wix, Fram, Mobil 1, Bosch, NGK), cross-check the Amazon Garage Confirmed Fit badge with your 17-digit VIN.
- Always consult your 2021 Mercedes Benz C Class owner's manual for exact torque specs and fluid service intervals.
Sources: NHTSA vPIC & OEM Service SpecificationsReport an inaccurate spec or part number
Frequently Asked Questions
What is the OEM tire size specification for a 2021 Mercedes Benz C Class?
The primary OEM tire size part number / specification for the 2021 Mercedes Benz C Class C 300 2.0L Turbo (W205) is 225/45R18.
Which aftermarket tire size brands fit the 2021 Mercedes Benz C Class?
Compatible aftermarket options include Michelin / Continental / Pirelli 225/45R18, Michelin / Continental / Pirelli 245/40R18.