Mercedes-Benz C400 tire size
The most common factory tire size for the Mercedes-Benz C400 is 225/45R18 front, 245/40R18 rear, on 2 of the 2 year and trim fits listed. The table lists every year from 2015 and the size each trim was built with. Pick your year and trim to see the tires that fit.
Mercedes-Benz C400 tire sizes by year
Check your own tire
A trim can be sold with more than one wheel size. The size printed on the sidewall of your current tire, or on the placard in the driver's door jamb, is the one your vehicle has.