245/65R17 tire size

A 245/65R17 tire is 29.5 inches (750 mm) tall and 9.6 inches (245 mm) wide, and fits a 17-inch wheel. In inch sizing it is about a 29.5x9.6R17.

Overall diameter29.54in750 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
245/70R16	29.5″	−0.1%	9.6″	6.8″	16″
245/60R18	29.6″	+0.1%	9.6″	5.8″	18″
265/50R19	29.4″	−0.4%	10.4″	5.2″	19″
245/50R20	29.6″	+0.4%	9.6″	4.8″	20″
275/25R24	29.4″	−0.4%	10.8″	2.7″	24″
265/45R20	29.4″	−0.5%	10.4″	4.7″	20″
265/40R21	29.3″	−0.7%	10.4″	4.2″	21″
275/45R20	29.7″	+0.7%	10.8″	4.9″	20″
265/35R22	29.3″	−0.8%	10.4″	3.7″	22″
225/75R16	29.3″	−0.9%	8.9″	6.6″	16″
285/35R22	29.9″	+1.1%	11.2″	3.9″	22″
235/75R16	29.9″	+1.1%	9.3″	6.9″	16″

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

245: Section width: 245 mm (9.6 in) from sidewall to sidewall.
65: Aspect ratio: the sidewall is 65% as tall as the tire is wide, 159 mm (6.3 in).
R: Radial construction, used by almost every modern tire.
17: Fits a 17-inch wheel.

245/65R17 is about 29.5 inches tall and 9.6 inches wide, on a 17-inch wheel, roughly a 29.5x9.6R17 in inch sizing.

Nearly. It measures 29.5 inches, so it falls between 29 and 30 inches.

245/70R16, 245/60R18, 265/50R19 are the closest common sizes, all within 0.4% of its diameter, so the speedometer stays close to accurate.

245/70R17 is 3.3% taller, so at an indicated 60 mph you would really be doing 62.0 mph. Compare 245/65R17 and 245/70R17.

About 683 per mile (424 per km), from a 92.8-inch circumference.