215/55R16 tire size

A 215/55R16 tire is 25.3 inches (643 mm) tall and 8.5 inches (215 mm) wide, and fits a 16-inch wheel. In inch sizing it is about a 25.3x8.5R16.

Overall diameter25.31in643 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
265/35R18	25.3″	−0.0%	10.4″	3.7″	18″
205/70R14	25.3″	−0.0%	8.1″	5.6″	14″
235/45R17	25.3″	+0.1%	9.3″	4.2″	17″
235/40R18	25.4″	+0.4%	9.3″	3.7″	18″
225/35R19	25.2″	−0.4%	8.9″	3.1″	19″
215/50R17	25.5″	+0.6%	8.5″	4.2″	17″
235/35R19	25.5″	+0.7%	9.3″	3.2″	19″
205/65R15	25.5″	+0.7%	8.1″	5.2″	15″
195/75R14	25.5″	+0.8%	7.7″	5.8″	14″
225/40R18	25.1″	−0.9%	8.9″	3.5″	18″
205/50R17	25.1″	−0.9%	8.1″	4.0″	17″
275/35R18	25.6″	+1.1%	10.8″	3.8″	18″

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

215: Section width: 215 mm (8.5 in) from sidewall to sidewall.
55: Aspect ratio: the sidewall is 55% as tall as the tire is wide, 118 mm (4.7 in).
R: Radial construction, used by almost every modern tire.
16: Fits a 16-inch wheel.

215/55R16 is about 25.3 inches tall and 8.5 inches wide, on a 16-inch wheel, roughly a 25.3x8.5R16 in inch sizing.

Nearly. It measures 25.3 inches, so it falls between 25 and 26 inches.

265/35R18, 205/70R14, 235/45R17 are the closest common sizes, all within 0.1% of its diameter, so the speedometer stays close to accurate.

215/60R16 is 3.3% taller, so at an indicated 60 mph you would really be doing 62.0 mph. Compare 215/55R16 and 215/60R16.

About 797 per mile (495 per km), from a 79.5-inch circumference.