245/55R22 tire size in inches

A 245/55R22 tire measures

32.6" tall × 9.6" wide

5.31" sidewall on a 22" wheel. 618 revolutions per mile.

245/55R22 means a tire 245 mm wide, with sidewalls 55% as tall as the tire is wide (135 mm), radial construction (R), for a 22 inch wheel.

32.6"22" rim5.3"9.6" wide
245/55R22: 32.6 inches tall, 9.6 inches wide, on a 22 inch rim, drawn to scale

245/55R22 specs

Overall diameter (height)32.61 inches (828 mm)
Section width9.65 inches (245 mm)
Sidewall height5.31 inches (135 mm)
Wheel (rim) diameter22 inches
Circumference102.4 inches (2,602 mm)
Revolutions per mile618
Revolutions per kilometer384
Approximate rim width7.0" to 8.5"
In inches (flotation style)32.6x9.6R22
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 245/55R22 on a 22" wheel

These 22" sizes are within 3% of 245/55R22's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
335/40R2232.55"13.19"−0.2%59.9 mphCompare
295/45R2232.45"11.61"−0.5%59.7 mphCompare
265/50R2232.43"10.43"−0.5%59.7 mphCompare
305/45R2232.81"12.01"+0.6%60.4 mphCompare
275/50R2232.83"10.83"+0.7%60.4 mphCompare
345/40R2232.87"13.58"+0.8%60.5 mphCompare
325/40R2232.24"12.80"−1.1%59.3 mphCompare
33x12.50R2233.00"12.50"+1.2%60.7 mphCompare
235/55R2232.18"9.25"−1.3%59.2 mphCompare
255/55R2233.04"10.04"+1.3%60.8 mphCompare
285/45R2232.10"11.22"−1.6%59.1 mphCompare
315/45R2233.16"12.40"+1.7%61.0 mphCompare

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

SizeWheelDiameterDifference
305/65R1717"32.61"0.0%Compare
265/70R1818"32.61"0.0%Compare
295/50R2121"32.61"0.0%Compare
285/65R1818"32.59"−0.1%Compare
345/50R1919"32.58"−0.1%Compare
315/55R1919"32.64"+0.1%Compare
355/45R2020"32.58"−0.1%Compare
265/75R1717"32.65"+0.1%Compare
265/65R1919"32.56"−0.1%Compare
275/40R2424"32.66"+0.2%Compare
315/35R2424"32.68"+0.2%Compare
245/65R2020"32.54"−0.2%Compare

One size up or down

Compare 245/55R22 with another size

With 255/55R22 tires, when your speedometer says 60 mph you are really going

60.8 mph

255/55R22 is +0.43 inches (+1.3%) in overall diameter. That is within the 3% most shops and makers allow.

245/55R22255/55R22Difference%
Overall diameter32.61"33.04"+0.43"+1.3%
Section width9.65"10.04"+0.39"+4.1%
Sidewall height5.31"5.52"+0.22"+4.1%
Circumference102.45"103.81"+1.36"+1.3%
Revolutions per mile618.5610.4−8.1−1.3%

Questions

How tall is a 245/55R22 tire?
A 245/55R22 tire is 32.6 inches tall (828 mm), calculated from the size. It is 9.6 inches wide with 5.3 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 245/55R22 mean?
245/55R22 means a tire 245 mm wide, with sidewalls 55% as tall as the tire is wide (135 mm), radial construction (R), for a 22 inch wheel.
How many revolutions per mile does a 245/55R22 tire make?
About 618 revolutions per mile, based on a circumference of 102.4 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 245/55R22 tire?
Roughly 7.0" to 8.5". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 335/40R22 instead of 245/55R22?
335/40R22 is −0.06 inches (−0.2%) 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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