345/45R22 tire size in inches

A 345/45R22 tire measures

34.2" tall × 13.6" wide

6.11" sidewall on a 22" wheel. 589 revolutions per mile.

345/45R22 means a tire 345 mm wide, with sidewalls 45% as tall as the tire is wide (155 mm), radial construction (R), for a 22 inch wheel.

34.2"22" rim6.1"13.6" wide
345/45R22: 34.2 inches tall, 13.6 inches wide, on a 22 inch rim, drawn to scale

345/45R22 specs

Overall diameter (height)34.22 inches (869 mm)
Section width13.58 inches (345 mm)
Sidewall height6.11 inches (155 mm)
Wheel (rim) diameter22 inches
Circumference107.5 inches (2,731 mm)
Revolutions per mile589
Revolutions per kilometer366
Approximate rim width11.5" to 13.0"
In inches (flotation style)34.2x13.6R22
Aspect ratio45%

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 345/45R22 on a 22" wheel

These 22" sizes are within 3% of 345/45R22's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
285/55R2234.34"11.22"+0.3%60.2 mphCompare
315/50R2234.40"12.40"+0.5%60.3 mphCompare
305/50R2234.01"12.01"−0.6%59.6 mphCompare
275/55R2233.91"10.83"−0.9%59.4 mphCompare
335/45R2233.87"13.19"−1.0%59.4 mphCompare
355/45R2234.58"13.98"+1.0%60.6 mphCompare
295/55R2234.78"11.61"+1.6%61.0 mphCompare
325/50R2234.80"12.80"+1.7%61.0 mphCompare
295/50R2233.61"11.61"−1.8%58.9 mphCompare
325/45R2233.52"12.80"−2.1%58.8 mphCompare
265/55R2233.48"10.43"−2.2%58.7 mphCompare
35x12.50R2235.00"12.50"+2.3%61.4 mphCompare

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

SizeWheelDiameterDifference
325/40R2424"34.24"0.0%Compare
305/55R2121"34.21"0.0%Compare
275/75R1818"34.24"0.0%Compare
295/70R1818"34.26"+0.1%Compare
335/50R2121"34.19"−0.1%Compare
315/65R1818"34.12"−0.3%Compare
295/65R1919"34.10"−0.4%Compare
325/60R1919"34.35"+0.4%Compare
315/70R1717"34.36"+0.4%Compare
275/65R2020"34.07"−0.4%Compare
285/85R1515"34.07"−0.4%Compare
325/55R2020"34.07"−0.4%Compare

One size up or down

Compare 345/45R22 with another size

With 355/45R22 tires, when your speedometer says 60 mph you are really going

60.6 mph

355/45R22 is +0.35 inches (+1.0%) in overall diameter. That is within the 3% most shops and makers allow.

345/45R22355/45R22Difference%
Overall diameter34.22"34.58"+0.35"+1.0%
Section width13.58"13.98"+0.39"+2.9%
Sidewall height6.11"6.29"+0.18"+2.9%
Circumference107.52"108.63"+1.11"+1.0%
Revolutions per mile589.3583.3−6.0−1.0%

Questions

How tall is a 345/45R22 tire?
A 345/45R22 tire is 34.2 inches tall (869 mm), calculated from the size. It is 13.6 inches wide with 6.1 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 345/45R22 mean?
345/45R22 means a tire 345 mm wide, with sidewalls 45% as tall as the tire is wide (155 mm), radial construction (R), for a 22 inch wheel.
How many revolutions per mile does a 345/45R22 tire make?
About 589 revolutions per mile, based on a circumference of 107.5 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 345/45R22 tire?
Roughly 11.5" to 13.0". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 285/55R22 instead of 345/45R22?
285/55R22 is +0.12 inches (+0.3%) in overall diameter, so at an indicated 60 mph you would be doing 60.2 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.

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