2021 Mercedes-Benz C-Class Bolt Pattern & Tire Size
The 2021 Mercedes-Benz C-Class OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2021 Mercedes-Benz C-Class has a 5x112 bolt pattern, an OEM tire size of 225/45R18, and a 66.6mm center bore.
Other years of the Mercedes-Benz C-Class
2021 Mercedes-Benz C-Class Engine & Trim Levels
Detailed tire and wheel breakdown for the 2021 Mercedes-Benz C-Class
Tire geometry â 225/45R18
The 225/45R18 fitted to the 2021 Mercedes-Benz C-Class has a section width of 225mm and an aspect ratio of 45%, mounted on a 18-inch rim. That gives a sidewall height of 101.3mm (3.99") and an overall outside diameter of 659.7mm (25.97"). At highway speed this tire completes roughly 483 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2021 Mercedes-Benz C-Class while keeping the speedometer accurate, target a 235/38R19 (plus-one). For a softer ride or winter setup, a 215/53R17 (minus-one) keeps the overall diameter within Âą3% of stock, which is the industry tolerance for ABS and stability control to stay calibrated.
Wheel fitment specs
The 2021 Mercedes-Benz C-Class uses a 5x112 bolt pattern with a 66.6mm hub bore. Safe rim width range for the OEM tire is 7.0J â 8.0J, and offsets in the ET39 â ET49 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2021 Mercedes-Benz C-Class ships staggered: 225/45R18 up front and 245/40R18 on the rear. That is a 245mm vs 225mm width difference â do not rotate front-to-rear, and replace tires in axle pairs to keep ABS and traction control balanced.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2021 Mercedes-Benz C-Class is printed on the driver-side door jamb sticker â always defer to that value, not to the maximum pressure printed on the tire sidewall. Check pressure monthly and before long trips; under-inflation by 20% can reduce tread life by 25%.
OEM Wheel & Tire Specs
Frequently Asked Questions
What tire size does the 2021 Mercedes-Benz C-Class C300 use?
The 2021 Mercedes-Benz C-Class C300 uses 225/45R18 tires as standard equipment.
What tire size does the 2021 Mercedes-Benz C-Class AMG C63 S use?
The 2021 Mercedes-Benz C-Class AMG C63 S uses 245/35ZR19 tires as standard equipment.
What is the bolt pattern of the 2021 Mercedes-Benz C-Class?
The 2021 Mercedes-Benz C-Class has a 5x112 bolt pattern with a center bore of 66.6mm.
What is the wheel offset of the 2021 Mercedes-Benz C-Class?
The 2021 Mercedes-Benz C-Class has a wheel offset of ET44.
Other Vehicles with 5x112 Bolt Pattern
The following vehicles share the same 5x112 bolt pattern as the 2021 Mercedes-Benz C-Class, making wheel interchangeability possible (verify offset and center bore before swapping).