Find the Best 255/45R20 Tires for Your Vehicle

This size is primarily found on luxury sedans like the BMW 5 Series, Mercedes E-Class, Audi A6, and Cadillac CT5, as well as performance crossovers including the Porsche Macan and BMW X3. Some high-trim versions of the Genesis G90 and Lexus GS also use this size.

255 indicates the tire width of 255 millimeters, 45 is the aspect ratio meaning the sidewall height is 45% of the width (114.75mm), R signifies radial construction, and 20 refers to the wheel diameter in inches that the tire fits.

Price ranges vary significantly: budget tires cost $200-350, mid-range options run $350-500, and premium performance tires range from $500-800+. Expect to pay around $1,400-2,000 for a complete set of quality tires.

Load indices typically range from 101-105, corresponding to weight capacities of 1,819-2,039 pounds per tire. Most luxury sedan applications use load index 101-103, while crossover applications often require 103-105.

Winter tire availability is limited but growing, with options from Michelin, Continental, Bridgestone, and Pirelli. The selection is smaller than all-season or summer tires due to the performance-oriented nature of vehicles using this size.

Rotate every 5,000-7,500 miles using a front-to-back pattern for non-directional tires, or side-to-side for directional tread patterns. The lower sidewall profile makes these tires more sensitive to uneven wear from misalignment.

The 45% aspect ratio provides a good compromise between performance and comfort. You'll experience responsive handling and precise steering feel, but with more road noise and impact harshness compared to higher-profile tires. Fuel economy is moderate due to the wider 255mm contact patch.