Select a size for your vehicle from the drop down and click the "Alternate Sizes" button to see a list of similar tire sizes.
You can then change the wheel size to see alternate sizes on a different diameter wheel.
Select a Size to Compare Prices on Available Tires
Mercedes-Benz equips the 2003 S55 Sedan with a 245/45R18 front tire and a 265/40R18 rear tire. Click on the sizes for each tire to compare prices online.