235/45R21 Tires

235 is the section width in millimetres, 45 is the aspect ratio (the sidewall is 45% of the width, about 105.8 mm), and R21 means a radial tire for a 21-inch wheel. Overall diameter is roughly 29.3 inches.

At ExtraBrake they range from $232.49 to $395.21 per tire, which is $929.96 to $1580.84 for a set of four.

Only fit a size approved for your vehicle. The manufacturer's recommended size is printed on the driver's door-jamb placard and in the owner's manual; changing size affects speedometer accuracy, load capacity and handling.