195/70R15 tire size in inches

A 195/70R15 tire measures

25.7" tall × 7.7" wide

5.37" sidewall on a 15" wheel. 783 revolutions per mile.

195/70R15 means a tire 195 mm wide, with sidewalls 70% as tall as the tire is wide (137 mm), radial construction (R), for a 15 inch wheel.

25.7"15" rim5.4"7.7" wide
195/70R15: 25.7 inches tall, 7.7 inches wide, on a 15 inch rim, drawn to scale

195/70R15 specs

Overall diameter (height)25.75 inches (654 mm)
Section width7.68 inches (195 mm)
Sidewall height5.37 inches (137 mm)
Wheel (rim) diameter15 inches
Circumference80.9 inches (2,055 mm)
Revolutions per mile783
Revolutions per kilometer487
Approximate rim width5.0" to 6.5"
In inches (flotation style)25.7x7.7R15
Aspect ratio70%

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 195/70R15 on a 15" wheel

These 15" sizes are within 3% of 195/70R15's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
275/50R1525.83"10.83"+0.3%60.2 mphCompare
225/60R1525.63"8.86"−0.5%59.7 mphCompare
245/55R1525.61"9.65"−0.5%59.7 mphCompare
185/75R1525.93"7.28"+0.7%60.4 mphCompare
205/65R1525.49"8.07"−1.0%59.4 mphCompare
215/65R1526.00"8.46"+1.0%60.6 mphCompare
175/80R1526.02"6.89"+1.1%60.6 mphCompare
165/85R1526.04"6.50"+1.1%60.7 mphCompare
255/55R1526.04"10.04"+1.1%60.7 mphCompare
265/50R1525.43"10.43"−1.2%59.3 mphCompare
165/80R1525.39"6.50"−1.4%59.2 mphCompare
235/60R1526.10"9.25"+1.4%60.8 mphCompare

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

SizeWheelDiameterDifference
225/55R1616"25.74"0.0%Compare
245/35R1919"25.75"0.0%Compare
275/45R1616"25.74"0.0%Compare
185/60R1717"25.74"0.0%Compare
285/30R1919"25.73"−0.1%Compare
215/40R1919"25.77"+0.1%Compare
245/40R1818"25.72"−0.1%Compare
175/85R1414"25.71"−0.1%Compare
245/30R2020"25.79"+0.2%Compare
345/25R1919"25.79"+0.2%Compare
215/75R1313"25.70"−0.2%Compare
295/25R2020"25.81"+0.2%Compare

One size up or down

Compare 195/70R15 with another size

With 205/70R15 tires, when your speedometer says 60 mph you are really going

61.3 mph

205/70R15 is +0.55 inches (+2.1%) in overall diameter. That is within the 3% most shops and makers allow.

195/70R15205/70R15Difference%
Overall diameter25.75"26.30"+0.55"+2.1%
Section width7.68"8.07"+0.39"+5.1%
Sidewall height5.37"5.65"+0.28"+5.1%
Circumference80.89"82.62"+1.73"+2.1%
Revolutions per mile783.3766.9−16.4−2.1%

Questions

How tall is a 195/70R15 tire?
A 195/70R15 tire is 25.7 inches tall (654 mm), calculated from the size. It is 7.7 inches wide with 5.4 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 195/70R15 mean?
195/70R15 means a tire 195 mm wide, with sidewalls 70% as tall as the tire is wide (137 mm), radial construction (R), for a 15 inch wheel.
How many revolutions per mile does a 195/70R15 tire make?
About 783 revolutions per mile, based on a circumference of 80.9 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 195/70R15 tire?
Roughly 5.0" to 6.5". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 275/50R15 instead of 195/70R15?
275/50R15 is +0.08 inches (+0.3%) 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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