185/60R15 tire size

A 185/60R15 tire is 23.7 inches (603 mm) tall and 7.3 inches (185 mm) wide, and fits a 15-inch wheel. In inch sizing it is about a 23.7x7.3R15.

Overall diameter23.74in603 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
195/50R16	23.7″	−0.3%	7.7″	3.8″	16″
175/70R14	23.6″	−0.4%	6.9″	4.8″	14″
205/55R15	23.9″	+0.6%	8.1″	4.4″	15″
175/65R15	24.0″	+0.9%	6.9″	4.5″	15″
185/55R16	24.0″	+1.1%	7.3″	4.0″	16″
185/65R14	23.5″	−1.1%	7.3″	4.7″	14″
195/55R15	23.4″	−1.2%	7.7″	4.2″	15″
205/50R16	24.1″	+1.4%	8.1″	4.0″	16″
165/80R13	23.4″	−1.5%	6.5″	5.2″	13″
185/70R14	24.2″	+1.9%	7.3″	5.1″	14″
195/60R15	24.2″	+2.0%	7.7″	4.6″	15″
195/60R14	23.2″	−2.2%	7.7″	4.6″	14″

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

185: Section width: 185 mm (7.3 in) from sidewall to sidewall.
60: Aspect ratio: the sidewall is 60% as tall as the tire is wide, 111 mm (4.4 in).
R: Radial construction, used by almost every modern tire.
15: Fits a 15-inch wheel.

185/60R15 is about 23.7 inches tall and 7.3 inches wide, on a 15-inch wheel, roughly a 23.7x7.3R15 in inch sizing.

Yes. At 23.7 inches it is sold and fitted as a 24-inch tire.

195/50R16, 175/70R14, 205/55R15 are the closest common sizes, all within 0.6% of its diameter, so the speedometer stays close to accurate.

185/65R15 is 3.1% taller, so at an indicated 60 mph you would really be doing 61.8 mph. Compare 185/60R15 and 185/65R15.

About 850 per mile (528 per km), from a 74.6-inch circumference.