What does 175/55R15 mean?
|The tire width is 175mm.|
|The aspect ratio of the tire is 55. Aspect ratio is the relative height of tire sidewall. The number refers to the percentage of sidewall height in relation to tire width.|
|The letter in the middle refers to tire construction. Practically all tires sold for cars are radials.|
Sometimes you also see tires with RF or ZR. RF indicates the tire is run flat, whereas ZR means the tire has speed rating higher than V. These tires are also radials, as the R indicates.
|Rim diameter for the tire.|
175/55R15 77T tire size
The width of 175/55R15 77T tire is stated in millimeters and sidewall height in percentages. In this table you’ll find out the 175/55R15 77T tire size in inches as well as few additional metrics:
|In inches||In millimeters|
Diameter / Height
|893 per mile||555 per kilometer|
Rim Size for 175/55R15 77T Tires
Recommended rim sizes for 175/55R15 77T tire:
What does 77T mean?
The load index 77 means that the tire has been designed to support 908 lbs or 412 kg.
The speed index T means that the tire has been designed to be used in speed up to 118 mph or 190 kph.This size tire is usually used on smaller cars, such as a Honda Civic.