The tires that came on your vehicle have a number of markings. Those you should be aware of are described below.
Here is an example of what each marking means:
P185/55R16 83H
- P: tire type (passenger vehicle)
- 185: tire width in millimeters
- 55: aspect ratio (tire section height as a percentage of its width)
- R: tire construction code (radial)
- 16: rim diameter in inches
- 83: load index (code indicating maximum load tire can carry)
- H: speed symbol (code indicating maximum speed rating)