GarageCalc What 195/65R14 means
195 is the section width in millimeters (7.7 in). 65 is the aspect ratio: the sidewall is 65 percent of the width, so 195 × 0.65 = 127 mm (5.0 in). R is radial construction, and 14 is the wheel diameter in inches (356 mm). Stack two sidewalls on the wheel and you get the overall diameter: 356 + 2 × 127 = 609 mm, or 24.0 in.
A full marking adds a load index and speed rating after the size, for example 195/65R14 91V. Those two codes set how much weight and speed the tire is certified for; look them up in the load index chart and the speed rating chart.
Plus and minus sizing from 195/65R14
Going up one wheel size, the closest match is 175/65R15 at -0.1% diameter with a 114 mm sidewall instead of 127 mm. No common 13-inch size stays within 3 percent either. Anything inside 3 percent keeps the speedometer, ABS and gearing effectively stock; the comparison calculator shows the full speedometer table for any pair.
Frequently asked questions
How tall is a 195/65R14 tire?
24.0 inches (609 mm) in overall diameter: the 14-inch wheel (356 mm) plus two 127 mm sidewalls. Real tires land within about 1 to 2 percent of that depending on brand, tread depth and pressure.
What is 195/65R14 in inches?
24.0 x 7.7 R14: 24.0 inches tall, 7.7 inches wide, on a 14-inch wheel. The sidewall is 5.0 inches and the circumference is 75.3 inches, so the tire turns 841 times per mile.
What tire sizes are equivalent to 195/65R14?
Within 3 percent of the same diameter on the same 14-inch wheel: 185/70R14 (+0.9%), 175/70R14 (-1.4%), 185/65R14 (-2.1%); on a 15-inch wheel: 175/65R15 (-0.1%), 205/55R15 (-0.4%). The percentage is the diameter change, which is also your speedometer error.