155/75R14 tire size in inches

A 155/75R14 tire measures

23.2" tall × 6.1" wide

4.58" sidewall on a 14" wheel. 871 revolutions per mile.

155/75R14 means a tire 155 mm wide, with sidewalls 75% as tall as the tire is wide (116 mm), radial construction (R), for a 14 inch wheel.

23.2"14" rim4.6"6.1" wide
155/75R14: 23.2 inches tall, 6.1 inches wide, on a 14 inch rim, drawn to scale

155/75R14 specs

Overall diameter (height)23.15 inches (588 mm)
Section width6.10 inches (155 mm)
Sidewall height4.58 inches (116 mm)
Wheel (rim) diameter14 inches
Circumference72.7 inches (1,848 mm)
Revolutions per mile871
Revolutions per kilometer541
Approximate rim width4.0" to 5.5"
In inches (flotation style)23.2x6.1R14
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 155/75R14 on a 14" wheel

These 14" sizes are within 3% of 155/75R14's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
165/70R1423.09"6.50"−0.3%59.8 mphCompare
195/60R1423.21"7.68"+0.3%60.2 mphCompare
215/55R1423.31"8.46"+0.7%60.4 mphCompare
175/65R1422.96"6.89"−0.9%59.5 mphCompare
205/55R1422.88"8.07"−1.2%59.3 mphCompare
185/65R1423.47"7.28"+1.4%60.8 mphCompare
185/60R1422.74"7.28"−1.8%58.9 mphCompare
175/70R1423.65"6.89"+2.1%61.3 mphCompare
205/60R1423.69"8.07"+2.3%61.4 mphCompare
165/75R1423.74"6.50"+2.6%61.5 mphCompare
225/55R1423.74"8.86"+2.6%61.5 mphCompare
155/70R1422.54"6.10"−2.6%58.4 mphCompare

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

SizeWheelDiameterDifference
215/60R1313"23.16"0.0%Compare
195/40R1717"23.14"−0.1%Compare
185/70R1313"23.20"+0.2%Compare
225/35R1717"23.20"+0.2%Compare
225/40R1616"23.09"−0.3%Compare
215/25R1919"23.23"+0.3%Compare
205/50R1515"23.07"−0.4%Compare
205/45R1616"23.26"+0.5%Compare
175/60R1515"23.27"+0.5%Compare
205/25R1919"23.04"−0.5%Compare
185/50R1616"23.28"+0.6%Compare
185/55R1515"23.01"−0.6%Compare

One size up or down

Compare 155/75R14 with another size

With 165/75R14 tires, when your speedometer says 60 mph you are really going

61.5 mph

165/75R14 is +0.59 inches (+2.6%) in overall diameter. That is within the 3% most shops and makers allow.

155/75R14165/75R14Difference%
Overall diameter23.15"23.74"+0.59"+2.6%
Section width6.10"6.50"+0.39"+6.5%
Sidewall height4.58"4.87"+0.30"+6.5%
Circumference72.74"74.59"+1.86"+2.6%
Revolutions per mile871.1849.4−21.7−2.5%

Questions

How tall is a 155/75R14 tire?
A 155/75R14 tire is 23.2 inches tall (588 mm), calculated from the size. It is 6.1 inches wide with 4.6 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 155/75R14 mean?
155/75R14 means a tire 155 mm wide, with sidewalls 75% as tall as the tire is wide (116 mm), radial construction (R), for a 14 inch wheel.
How many revolutions per mile does a 155/75R14 tire make?
About 871 revolutions per mile, based on a circumference of 72.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 155/75R14 tire?
Roughly 4.0" to 5.5". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 165/70R14 instead of 155/75R14?
165/70R14 is −0.06 inches (−0.3%) in overall diameter, so at an indicated 60 mph you would be doing 59.8 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.

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