225/50R16 tire size in inches

A 225/50R16 tire measures

24.9" tall × 8.9" wide

4.43" sidewall on a 16" wheel. 811 revolutions per mile.

225/50R16 means a tire 225 mm wide, with sidewalls 50% as tall as the tire is wide (113 mm), radial construction (R), for a 16 inch wheel.

24.9"16" rim4.4"8.9" wide
225/50R16: 24.9 inches tall, 8.9 inches wide, on a 16 inch rim, drawn to scale

225/50R16 specs

Overall diameter (height)24.86 inches (631 mm)
Section width8.86 inches (225 mm)
Sidewall height4.43 inches (113 mm)
Wheel (rim) diameter16 inches
Circumference78.1 inches (1,984 mm)
Revolutions per mile811
Revolutions per kilometer504
Approximate rim width6.5" to 8.0"
In inches (flotation style)24.9x8.9R16
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 225/50R16 on a 16" wheel

These 16" sizes are within 3% of 225/50R16's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
205/55R1624.88"8.07"+0.1%60.0 mphCompare
175/65R1624.96"6.89"+0.4%60.2 mphCompare
185/60R1624.74"7.28"−0.5%59.7 mphCompare
285/40R1624.98"11.22"+0.5%60.3 mphCompare
245/45R1624.68"9.65"−0.7%59.6 mphCompare
255/45R1625.04"10.04"+0.7%60.4 mphCompare
275/40R1624.66"10.83"−0.8%59.5 mphCompare
195/60R1625.21"7.68"+1.4%60.9 mphCompare
215/50R1624.46"8.46"−1.6%59.0 mphCompare
235/50R1625.25"9.25"+1.6%61.0 mphCompare
195/55R1624.44"7.68"−1.7%59.0 mphCompare
295/40R1625.29"11.61"+1.7%61.0 mphCompare

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

SizeWheelDiameterDifference
285/35R1717"24.85"0.0%Compare
215/70R1313"24.85"0.0%Compare
245/25R2020"24.82"−0.1%Compare
195/45R1818"24.91"+0.2%Compare
295/25R1919"24.81"−0.2%Compare
215/35R1919"24.93"+0.3%Compare
185/75R1414"24.93"+0.3%Compare
245/30R1919"24.79"−0.3%Compare
215/40R1818"24.77"−0.3%Compare
245/35R1818"24.75"−0.4%Compare
195/70R1414"24.75"−0.4%Compare
165/75R1515"24.74"−0.5%Compare

One size up or down

Compare 225/50R16 with another size

With 235/50R16 tires, when your speedometer says 60 mph you are really going

61.0 mph

235/50R16 is +0.39 inches (+1.6%) in overall diameter. That is within the 3% most shops and makers allow.

225/50R16235/50R16Difference%
Overall diameter24.86"25.25"+0.39"+1.6%
Section width8.86"9.25"+0.39"+4.4%
Sidewall height4.43"4.63"+0.20"+4.4%
Circumference78.09"79.33"+1.24"+1.6%
Revolutions per mile811.3798.7−12.6−1.6%

Questions

How tall is a 225/50R16 tire?
A 225/50R16 tire is 24.9 inches tall (631 mm), calculated from the size. It is 8.9 inches wide with 4.4 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 225/50R16 mean?
225/50R16 means a tire 225 mm wide, with sidewalls 50% as tall as the tire is wide (113 mm), radial construction (R), for a 16 inch wheel.
How many revolutions per mile does a 225/50R16 tire make?
About 811 revolutions per mile, based on a circumference of 78.1 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 225/50R16 tire?
Roughly 6.5" to 8.0". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 205/55R16 instead of 225/50R16?
205/55R16 is +0.02 inches (+0.1%) in overall diameter, so at an indicated 60 mph you would be doing 60.0 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.

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