315/50R22 tire size in inches

A 315/50R22 tire measures

34.4" tall × 12.4" wide

6.20" sidewall on a 22" wheel. 586 revolutions per mile.

315/50R22 means a tire 315 mm wide, with sidewalls 50% as tall as the tire is wide (158 mm), radial construction (R), for a 22 inch wheel.

34.4"22" rim6.2"12.4" wide
315/50R22: 34.4 inches tall, 12.4 inches wide, on a 22 inch rim, drawn to scale

315/50R22 specs

Overall diameter (height)34.40 inches (874 mm)
Section width12.40 inches (315 mm)
Sidewall height6.20 inches (158 mm)
Wheel (rim) diameter22 inches
Circumference108.1 inches (2,745 mm)
Revolutions per mile586
Revolutions per kilometer364
Approximate rim width9.0" to 10.5"
In inches (flotation style)34.4x12.4R22
Aspect ratio50%

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 315/50R22 on a 22" wheel

These 22" sizes are within 3% of 315/50R22's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
285/55R2234.34"11.22"−0.2%59.9 mphCompare
355/45R2234.58"13.98"+0.5%60.3 mphCompare
345/45R2234.22"13.58"−0.5%59.7 mphCompare
295/55R2234.78"11.61"+1.1%60.7 mphCompare
305/50R2234.01"12.01"−1.1%59.3 mphCompare
325/50R2234.80"12.80"+1.1%60.7 mphCompare
275/55R2233.91"10.83"−1.4%59.1 mphCompare
335/45R2233.87"13.19"−1.5%59.1 mphCompare
35x12.50R2235.00"12.50"+1.7%61.0 mphCompare
295/50R2233.61"11.61"−2.3%58.6 mphCompare
335/50R2235.19"13.19"+2.3%61.4 mphCompare
305/55R2235.21"12.01"+2.3%61.4 mphCompare

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

SizeWheelDiameterDifference
275/85R1616"34.41"0.0%Compare
305/60R2020"34.41"0.0%Compare
295/75R1717"34.42"+0.1%Compare
355/55R1919"34.37"−0.1%Compare
315/70R1717"34.36"−0.1%Compare
325/60R1919"34.35"−0.1%Compare
335/55R2020"34.51"+0.3%Compare
295/70R1818"34.26"−0.4%Compare
335/40R2424"34.55"+0.4%Compare
275/75R1818"34.24"−0.5%Compare
325/40R2424"34.24"−0.5%Compare
295/80R1616"34.58"+0.5%Compare

One size up or down

Compare 315/50R22 with another size

With 325/50R22 tires, when your speedometer says 60 mph you are really going

60.7 mph

325/50R22 is +0.39 inches (+1.1%) in overall diameter. That is within the 3% most shops and makers allow.

315/50R22325/50R22Difference%
Overall diameter34.40"34.80"+0.39"+1.1%
Section width12.40"12.80"+0.39"+3.2%
Sidewall height6.20"6.40"+0.20"+3.2%
Circumference108.08"109.31"+1.24"+1.1%
Revolutions per mile586.3579.6−6.6−1.1%

Questions

How tall is a 315/50R22 tire?
A 315/50R22 tire is 34.4 inches tall (874 mm), calculated from the size. It is 12.4 inches wide with 6.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 315/50R22 mean?
315/50R22 means a tire 315 mm wide, with sidewalls 50% as tall as the tire is wide (158 mm), radial construction (R), for a 22 inch wheel.
How many revolutions per mile does a 315/50R22 tire make?
About 586 revolutions per mile, based on a circumference of 108.1 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 315/50R22 tire?
Roughly 9.0" to 10.5". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 285/55R22 instead of 315/50R22?
285/55R22 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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