255/55R22 tire size in inches

A 255/55R22 tire measures

33.0" tall × 10.0" wide

5.52" sidewall on a 22" wheel. 610 revolutions per mile.

255/55R22 means a tire 255 mm wide, with sidewalls 55% as tall as the tire is wide (140 mm), radial construction (R), for a 22 inch wheel.

33.0"22" rim5.5"10.0" wide
255/55R22: 33.0 inches tall, 10.0 inches wide, on a 22 inch rim, drawn to scale

255/55R22 specs

Overall diameter (height)33.04 inches (839 mm)
Section width10.04 inches (255 mm)
Sidewall height5.52 inches (140 mm)
Wheel (rim) diameter22 inches
Circumference103.8 inches (2,637 mm)
Revolutions per mile610
Revolutions per kilometer379
Approximate rim width7.5" to 9.0"
In inches (flotation style)33.0x10.0R22
Aspect ratio55%

Calculated from the size. Real tires differ by brand, model and tread depth, typically by a few tenths of an inch.

Sizes that can replace 255/55R22 on a 22" wheel

These 22" sizes are within 3% of 255/55R22's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
33x12.50R2233.00"12.50"−0.1%59.9 mphCompare
315/45R2233.16"12.40"+0.4%60.2 mphCompare
355/40R2233.18"13.98"+0.4%60.3 mphCompare
285/50R2233.22"11.22"+0.5%60.3 mphCompare
345/40R2232.87"13.58"−0.5%59.7 mphCompare
275/50R2232.83"10.83"−0.7%59.6 mphCompare
305/45R2232.81"12.01"−0.7%59.6 mphCompare
265/55R2233.48"10.43"+1.3%60.8 mphCompare
245/55R2232.61"9.65"−1.3%59.2 mphCompare
325/45R2233.52"12.80"+1.4%60.9 mphCompare
335/40R2232.55"13.19"−1.5%59.1 mphCompare
295/50R2233.61"11.61"+1.7%61.0 mphCompare

Same height on other wheel sizes (plus and minus sizing)

SizeWheelDiameterDifference
255/65R2020"33.05"0.0%Compare
255/75R1818"33.06"0.0%Compare
255/85R1616"33.07"+0.1%Compare
275/65R1919"33.07"+0.1%Compare
325/55R1919"33.07"+0.1%Compare
305/50R2121"33.01"−0.1%Compare
33x12.50R1515"33.00"−0.1%Compare
33x12.50R1616"33.00"−0.1%Compare
33x12.50R1717"33.00"−0.1%Compare
33x12.50R1818"33.00"−0.1%Compare
33x12.50R2020"33.00"−0.1%Compare
275/60R2020"32.99"−0.2%Compare

One size up or down

Compare 255/55R22 with another size

With 265/55R22 tires, when your speedometer says 60 mph you are really going

60.8 mph

265/55R22 is +0.43 inches (+1.3%) in overall diameter. That is within the 3% most shops and makers allow.

255/55R22265/55R22Difference%
Overall diameter33.04"33.48"+0.43"+1.3%
Section width10.04"10.43"+0.39"+3.9%
Sidewall height5.52"5.74"+0.22"+3.9%
Circumference103.81"105.17"+1.36"+1.3%
Revolutions per mile610.4602.5−7.9−1.3%

Questions

How tall is a 255/55R22 tire?
A 255/55R22 tire is 33.0 inches tall (839 mm), calculated from the size. It is 10.0 inches wide with 5.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 255/55R22 mean?
255/55R22 means a tire 255 mm wide, with sidewalls 55% as tall as the tire is wide (140 mm), radial construction (R), for a 22 inch wheel.
How many revolutions per mile does a 255/55R22 tire make?
About 610 revolutions per mile, based on a circumference of 103.8 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 255/55R22 tire?
Roughly 7.5" to 9.0". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 33x12.50R22 instead of 255/55R22?
33x12.50R22 is −0.04 inches (−0.1%) in overall diameter, so at an indicated 60 mph you would be doing 59.9 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.

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