315/55R22 tire size in inches

A 315/55R22 tire measures

35.6" tall × 12.4" wide

6.82" sidewall on a 22" wheel. 566 revolutions per mile.

315/55R22 means a tire 315 mm wide, with sidewalls 55% as tall as the tire is wide (173 mm), radial construction (R), for a 22 inch wheel.

35.6"22" rim6.8"12.4" wide
315/55R22: 35.6 inches tall, 12.4 inches wide, on a 22 inch rim, drawn to scale

315/55R22 specs

Overall diameter (height)35.64 inches (905 mm)
Section width12.40 inches (315 mm)
Sidewall height6.82 inches (173 mm)
Wheel (rim) diameter22 inches
Circumference112.0 inches (2,844 mm)
Revolutions per mile566
Revolutions per kilometer352
Approximate rim width9.0" to 10.5"
In inches (flotation style)35.6x12.4R22
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 315/55R22 on a 22" wheel

These 22" sizes are within 3% of 315/55R22's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
345/50R2235.58"13.58"−0.2%59.9 mphCompare
355/50R2235.98"13.98"+0.9%60.6 mphCompare
305/55R2235.21"12.01"−1.2%59.3 mphCompare
335/50R2235.19"13.19"−1.3%59.2 mphCompare
35x12.50R2235.00"12.50"−1.8%58.9 mphCompare
325/50R2234.80"12.80"−2.4%58.6 mphCompare
295/55R2234.78"11.61"−2.4%58.5 mphCompare
355/45R2234.58"13.98"−3.0%58.2 mphCompare

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

SizeWheelDiameterDifference
325/65R1919"35.63"0.0%Compare
305/65R2020"35.61"−0.1%Compare
315/75R1717"35.60"−0.1%Compare
295/85R1616"35.74"+0.3%Compare
355/60R1919"35.77"+0.4%Compare
335/55R2121"35.51"−0.4%Compare
335/60R2020"35.83"+0.5%Compare
295/75R1818"35.42"−0.6%Compare
355/55R2020"35.37"−0.8%Compare
325/70R1818"35.91"+0.8%Compare
315/70R1818"35.36"−0.8%Compare
325/60R2020"35.35"−0.8%Compare

One size up or down

Compare 315/55R22 with another size

With 345/50R22 tires, when your speedometer says 60 mph you are really going

59.9 mph

345/50R22 is −0.06 inches (−0.2%) in overall diameter. That is within the 3% most shops and makers allow.

315/55R22345/50R22Difference%
Overall diameter35.64"35.58"−0.06"−0.2%
Section width12.40"13.58"+1.18"+9.5%
Sidewall height6.82"6.79"−0.03"−0.4%
Circumference111.97"111.79"−0.19"−0.2%
Revolutions per mile565.9566.8+0.9+0.2%

Questions

How tall is a 315/55R22 tire?
A 315/55R22 tire is 35.6 inches tall (905 mm), calculated from the size. It is 12.4 inches wide with 6.8 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 315/55R22 mean?
315/55R22 means a tire 315 mm wide, with sidewalls 55% as tall as the tire is wide (173 mm), radial construction (R), for a 22 inch wheel.
How many revolutions per mile does a 315/55R22 tire make?
About 566 revolutions per mile, based on a circumference of 112.0 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 315/55R22 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 345/50R22 instead of 315/55R22?
345/50R22 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.

Browse