Tires: Description and Operation

The tire is of a low profile type. For example, a tire with designation 195/65 R 15 91 means:
195 = Tire width (C) in mm; see illustration
65 = Relationship profile between the tire height and width as a percentage (D)
R = Radial
15 = Tires inner diameter in inches
91 = Loading code
V = Speed code