175/75R16 tire size in inches

A 175/75R16 tire measures

26.3" tall × 6.9" wide

5.17" sidewall on a 16" wheel. 766 revolutions per mile.

175/75R16 means a tire 175 mm wide, with sidewalls 75% as tall as the tire is wide (131 mm), radial construction (R), for a 16 inch wheel.

26.3"16" rim5.2"6.9" wide
175/75R16: 26.3 inches tall, 6.9 inches wide, on a 16 inch rim, drawn to scale

175/75R16 specs

Overall diameter (height)26.33 inches (669 mm)
Section width6.89 inches (175 mm)
Sidewall height5.17 inches (131 mm)
Wheel (rim) diameter16 inches
Circumference82.7 inches (2,101 mm)
Revolutions per mile766
Revolutions per kilometer476
Approximate rim width4.5" to 6.0"
In inches (flotation style)26.3x6.9R16
Aspect ratio75%

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 175/75R16 on a 16" wheel

These 16" sizes are within 3% of 175/75R16's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
265/50R1626.43"10.43"+0.4%60.2 mphCompare
295/45R1626.45"11.61"+0.4%60.3 mphCompare
185/70R1626.20"7.28"−0.5%59.7 mphCompare
205/65R1626.49"8.07"+0.6%60.4 mphCompare
235/55R1626.18"9.25"−0.6%59.6 mphCompare
215/60R1626.16"8.46"−0.7%59.6 mphCompare
285/45R1626.10"11.22"−0.9%59.5 mphCompare
245/55R1626.61"9.65"+1.0%60.6 mphCompare
225/60R1626.63"8.86"+1.1%60.7 mphCompare
255/50R1626.04"10.04"−1.1%59.3 mphCompare
195/65R1625.98"7.68"−1.3%59.2 mphCompare
195/70R1626.75"7.68"+1.6%60.9 mphCompare

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

SizeWheelDiameterDifference
235/45R1818"26.33"0.0%Compare
265/40R1818"26.35"0.0%Compare
225/30R2121"26.31"−0.1%Compare
215/55R1717"26.31"−0.1%Compare
265/35R1919"26.30"−0.1%Compare
205/70R1515"26.30"−0.1%Compare
295/40R1717"26.29"−0.2%Compare
185/85R1414"26.38"+0.2%Compare
225/75R1313"26.29"−0.2%Compare
195/80R1414"26.28"−0.2%Compare
265/45R1717"26.39"+0.2%Compare
325/25R2020"26.40"+0.2%Compare

One size up or down

Compare 175/75R16 with another size

With 185/75R16 tires, when your speedometer says 60 mph you are really going

61.3 mph

185/75R16 is +0.59 inches (+2.2%) in overall diameter. That is within the 3% most shops and makers allow.

175/75R16185/75R16Difference%
Overall diameter26.33"26.93"+0.59"+2.2%
Section width6.89"7.28"+0.39"+5.7%
Sidewall height5.17"5.46"+0.30"+5.7%
Circumference82.73"84.59"+1.86"+2.2%
Revolutions per mile765.8749.0−16.8−2.2%

Questions

How tall is a 175/75R16 tire?
A 175/75R16 tire is 26.3 inches tall (669 mm), calculated from the size. It is 6.9 inches wide with 5.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 175/75R16 mean?
175/75R16 means a tire 175 mm wide, with sidewalls 75% as tall as the tire is wide (131 mm), radial construction (R), for a 16 inch wheel.
How many revolutions per mile does a 175/75R16 tire make?
About 766 revolutions per mile, based on a circumference of 82.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 175/75R16 tire?
Roughly 4.5" to 6.0". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 265/50R16 instead of 175/75R16?
265/50R16 is +0.10 inches (+0.4%) 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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