215/50R17 tire size

A 215/50R17 tire is 25.5 inches (647 mm) tall and 8.5 inches (215 mm) wide, and fits a 17-inch wheel. In inch sizing it is about a 25.5x8.5R17.

Overall diameter25.46in647 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
235/35R19	25.5″	+0.0%	9.3″	3.2″	19″
205/65R15	25.5″	+0.1%	8.1″	5.2″	15″
195/75R14	25.5″	+0.2%	7.7″	5.8″	14″
235/40R18	25.4″	−0.2%	9.3″	3.7″	18″
275/35R18	25.6″	+0.4%	10.8″	3.8″	18″
235/45R17	25.3″	−0.5%	9.3″	4.2″	17″
215/55R16	25.3″	−0.6%	8.5″	4.7″	16″
215/45R18	25.6″	+0.6%	8.5″	3.8″	18″
265/35R18	25.3″	−0.6%	10.4″	3.7″	18″
205/70R14	25.3″	−0.6%	8.1″	5.6″	14″
225/60R15	25.6″	+0.6%	8.9″	5.3″	15″
245/45R17	25.7″	+0.9%	9.6″	4.3″	17″

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.
50: Aspect ratio: the sidewall is 50% as tall as the tire is wide, 108 mm (4.2 in).
R: Radial construction, used by almost every modern tire.
17: Fits a 17-inch wheel.

215/50R17 is about 25.5 inches tall and 8.5 inches wide, on a 17-inch wheel, roughly a 25.5x8.5R17 in inch sizing.

Nearly. It measures 25.5 inches, so it falls between 25 and 26 inches.

235/35R19, 205/65R15, 195/75R14 are the closest common sizes, all within 0.2% of its diameter, so the speedometer stays close to accurate.

215/55R17 is 3.3% taller, so at an indicated 60 mph you would really be doing 62.0 mph. Compare 215/50R17 and 215/55R17.

About 792 per mile (492 per km), from a 80.0-inch circumference.