195/50R15 tire size

A 195/50R15 tire is 22.7 inches (576 mm) tall and 7.7 inches (195 mm) wide, and fits a 15-inch wheel. In inch sizing it is about a 22.7x7.7R15.

Overall diameter22.68in576 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
175/70R13	22.6″	−0.1%	6.9″	4.8″	13″
185/60R14	22.7″	+0.3%	7.3″	4.4″	14″
155/80R13	22.8″	+0.4%	6.1″	4.9″	13″
165/65R14	22.4″	−1.0%	6.5″	4.2″	14″
175/65R14	23.0″	+1.2%	6.9″	4.5″	14″
185/55R15	23.0″	+1.5%	7.3″	4.0″	15″
165/70R14	23.1″	+1.8%	6.5″	4.5″	14″
185/70R13	23.2″	+2.3%	7.3″	5.1″	13″
195/60R14	23.2″	+2.4%	7.7″	4.6″	14″
165/70R13	22.1″	−2.6%	6.5″	4.5″	13″

Within 3% of the original diameter is the range most tire shops treat as a direct swap. Check load index and clearance too.

195: Section width: 195 mm (7.7 in) from sidewall to sidewall.
50: Aspect ratio: the sidewall is 50% as tall as the tire is wide, 98 mm (3.8 in).
R: Radial construction, used by almost every modern tire.
15: Fits a 15-inch wheel.

195/50R15 is about 22.7 inches tall and 7.7 inches wide, on a 15-inch wheel, roughly a 22.7x7.7R15 in inch sizing.

Nearly. It measures 22.7 inches, so it falls between 22 and 23 inches.

175/70R13, 185/60R14, 155/80R13 are the closest common sizes, all within 0.4% of its diameter, so the speedometer stays close to accurate.

195/55R15 is 3.4% taller, so at an indicated 60 mph you would really be doing 62.0 mph. Compare 195/50R15 and 195/55R15.

About 889 per mile (553 per km), from a 71.2-inch circumference.