255/50R20 tire size breakdown:
255 = Tire width in millimeters (255 mm)
50 = Aspect ratio (sidewall height is 50% of 255 mm = about 128 mm)
R = Radial construction
20 = Wheel/rim diameter in inches (20")
Approximate Dimensions
Sidewall height: 128 mm
Overall diameter: 763 mm (30.0 inches)
Circumference: 2.40 m
Key Features
Wide tire with strong road grip and stability.
Moderate sidewall height balances comfort and handling.
Common on modern SUVs and luxury crossovers.
Suitable for both highway driving and urban use.
Common Vehicles Using 255/50R20
BMW X5
Mercedes-Benz GLE
Audi Q7
Land Rover Discovery
Volvo XC90
This size is a popular SUV tire size, offering a good combination of comfort, stability, and load-carrying capability.