265/35R20 tire size

A 265/35R20 tire is 27.3 inches (694 mm) tall and 10.4 inches (265 mm) wide, and fits a 20-inch wheel. In inch sizing it is about a 27.3x10.4R20.

Overall diameter27.30in694 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
215/55R18	27.3″	+0.0%	8.5″	4.7″	18″
235/45R19	27.3″	+0.1%	9.3″	4.2″	19″
235/50R18	27.3″	−0.2%	9.3″	4.6″	18″
225/70R15	27.4″	+0.4%	8.9″	6.2″	15″
235/55R17	27.2″	−0.5%	9.3″	5.1″	17″
215/60R17	27.2″	−0.5%	8.5″	5.1″	17″
235/60R16	27.1″	−0.7%	9.3″	5.6″	16″
255/45R18	27.0″	−1.0%	10.0″	4.5″	18″
255/40R19	27.0″	−1.0%	10.0″	4.0″	19″
255/35R20	27.0″	−1.0%	10.0″	3.5″	20″
215/65R16	27.0″	−1.1%	8.5″	5.5″	16″
225/60R17	27.6″	+1.2%	8.9″	5.3″	17″

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

265: Section width: 265 mm (10.4 in) from sidewall to sidewall.
35: Aspect ratio: the sidewall is 35% as tall as the tire is wide, 93 mm (3.7 in).
R: Radial construction, used by almost every modern tire.
20: Fits a 20-inch wheel.

265/35R20 is about 27.3 inches tall and 10.4 inches wide, on a 20-inch wheel, roughly a 27.3x10.4R20 in inch sizing.

Nearly. It measures 27.3 inches, so it falls between 27 and 28 inches.

215/55R18, 235/45R19, 235/50R18 are the closest common sizes, all within 0.2% of its diameter, so the speedometer stays close to accurate.

235/45R20 is 3.7% taller, so at an indicated 60 mph you would really be doing 62.2 mph. Compare 265/35R20 and 235/45R20.

About 739 per mile (459 per km), from a 85.8-inch circumference.