265/40R22 tire size

A 265/40R22 tire is 30.3 inches (771 mm) tall and 10.4 inches (265 mm) wide, and fits a 22-inch wheel. In inch sizing it is about a 30.3x10.4R22.

Overall diameter30.35in771 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
265/50R20	30.4″	+0.3%	10.4″	5.2″	20″
245/75R16	30.5″	+0.4%	9.6″	7.2″	16″
245/70R17	30.5″	+0.5%	9.6″	6.8″	17″
235/55R20	30.2″	−0.6%	9.3″	5.1″	20″
265/60R18	30.5″	+0.6%	10.4″	6.3″	18″
265/65R17	30.6″	+0.7%	10.4″	6.8″	17″
265/70R16	30.6″	+0.9%	10.4″	7.3″	16″
255/70R16	30.1″	−1.0%	10.0″	7.0″	16″
255/65R17	30.1″	−1.0%	10.0″	6.5″	17″
255/60R18	30.0″	−1.0%	10.0″	6.0″	18″
255/55R19	30.0″	−1.0%	10.0″	5.5″	19″
255/50R20	30.0″	−1.0%	10.0″	5.0″	20″

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

265: Section width: 265 mm (10.4 in) from sidewall to sidewall.
40: Aspect ratio: the sidewall is 40% as tall as the tire is wide, 106 mm (4.2 in).
R: Radial construction, used by almost every modern tire.
22: Fits a 22-inch wheel.

265/40R22 is about 30.3 inches tall and 10.4 inches wide, on a 22-inch wheel, roughly a 30.3x10.4R22 in inch sizing.

Nearly. It measures 30.3 inches, so it falls between 30 and 31 inches.

265/50R20, 245/75R16, 245/70R17 are the closest common sizes, all within 0.5% of its diameter, so the speedometer stays close to accurate.

305/40R22 is 4.2% taller, so at an indicated 60 mph you would really be doing 62.5 mph. Compare 265/40R22 and 305/40R22.

About 665 per mile (413 per km), from a 95.3-inch circumference.