235/35R20 tire size

A 235/35R20 tire is 26.5 inches (673 mm) tall and 9.3 inches (235 mm) wide, and fits a 20-inch wheel. In inch sizing it is about a 26.5x9.3R20.

Overall diameter26.48in673 mm

Drawn to scale from the nominal size.

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Size	Diameter	Difference	Width	Sidewall	Wheel
205/65R16	26.5″	+0.1%	8.1″	5.2″	16″
235/40R19	26.4″	−0.3%	9.3″	3.7″	19″
275/35R19	26.6″	+0.4%	10.8″	3.8″	19″
235/45R18	26.3″	−0.6%	9.3″	4.2″	18″
225/60R16	26.6″	+0.6%	8.9″	5.3″	16″
215/55R17	26.3″	−0.6%	8.5″	4.7″	17″
205/70R15	26.3″	−0.7%	8.1″	5.6″	15″
275/40R18	26.7″	+0.7%	10.8″	4.3″	18″
245/45R18	26.7″	+0.8%	9.6″	4.3″	18″
215/75R14	26.7″	+0.8%	8.5″	6.3″	14″
245/40R19	26.7″	+0.9%	9.6″	3.9″	19″
225/55R17	26.7″	+1.0%	8.9″	4.9″	17″

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

235: Section width: 235 mm (9.3 in) from sidewall to sidewall.
35: Aspect ratio: the sidewall is 35% as tall as the tire is wide, 82 mm (3.2 in).
R: Radial construction, used by almost every modern tire.
20: Fits a 20-inch wheel.

235/35R20 is about 26.5 inches tall and 9.3 inches wide, on a 20-inch wheel, roughly a 26.5x9.3R20 in inch sizing.

Nearly. It measures 26.5 inches, so it falls between 26 and 27 inches.

205/65R16, 235/40R19, 275/35R19 are the closest common sizes, all within 0.4% of its diameter, so the speedometer stays close to accurate.

265/35R20 is 3.1% taller, so at an indicated 60 mph you would really be doing 61.9 mph. Compare 235/35R20 and 265/35R20.

About 762 per mile (473 per km), from a 83.2-inch circumference.