195/65R15 tire size in inches

A 195/65R15 tire measures

25.0" tall × 7.7" wide

4.99" sidewall on a 15" wheel. 807 revolutions per mile.

195/65R15 means a tire 195 mm wide, with sidewalls 65% as tall as the tire is wide (127 mm), radial construction (R), for a 15 inch wheel.

25.0"15" rim5.0"7.7" wide
195/65R15: 25.0 inches tall, 7.7 inches wide, on a 15 inch rim, drawn to scale

195/65R15 specs

Overall diameter (height)24.98 inches (635 mm)
Section width7.68 inches (195 mm)
Sidewall height4.99 inches (127 mm)
Wheel (rim) diameter15 inches
Circumference78.5 inches (1,993 mm)
Revolutions per mile807
Revolutions per kilometer502
Approximate rim width5.0" to 6.5"
In inches (flotation style)25.0x7.7R15
Aspect ratio65%

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 195/65R15 on a 15" wheel

These 15" sizes are within 3% of 195/65R15's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
255/50R1525.04"10.04"+0.2%60.1 mphCompare
285/45R1525.10"11.22"+0.5%60.3 mphCompare
215/60R1525.16"8.46"+0.7%60.4 mphCompare
235/55R1525.18"9.25"+0.8%60.5 mphCompare
185/70R1525.20"7.28"+0.9%60.5 mphCompare
165/75R1524.74"6.50"−0.9%59.4 mphCompare
225/55R1524.74"8.86"−0.9%59.4 mphCompare
275/45R1524.74"10.83"−0.9%59.4 mphCompare
205/60R1524.69"8.07"−1.2%59.3 mphCompare
175/70R1524.65"6.89"−1.3%59.2 mphCompare
245/50R1524.65"9.65"−1.3%59.2 mphCompare
175/75R1525.33"6.89"+1.4%60.9 mphCompare

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

SizeWheelDiameterDifference
285/40R1616"24.98"0.0%Compare
225/45R1717"24.97"0.0%Compare
175/65R1616"24.96"−0.1%Compare
215/65R1414"25.00"+0.1%Compare
305/25R1919"25.00"+0.1%Compare
185/55R1717"25.01"+0.1%Compare
255/25R2020"25.02"+0.2%Compare
175/80R1414"25.02"+0.2%Compare
255/30R1919"25.02"+0.2%Compare
235/65R1313"25.03"+0.2%Compare
255/35R1818"25.03"+0.2%Compare
255/40R1717"25.03"+0.2%Compare

One size up or down

Compare 195/65R15 with another size

With 205/65R15 tires, when your speedometer says 60 mph you are really going

61.2 mph

205/65R15 is +0.51 inches (+2.0%) in overall diameter. That is within the 3% most shops and makers allow.

195/65R15205/65R15Difference%
Overall diameter24.98"25.49"+0.51"+2.0%
Section width7.68"8.07"+0.39"+5.1%
Sidewall height4.99"5.25"+0.26"+5.1%
Circumference78.48"80.09"+1.61"+2.0%
Revolutions per mile807.4791.2−16.2−2.0%

Questions

How tall is a 195/65R15 tire?
A 195/65R15 tire is 25.0 inches tall (635 mm), calculated from the size. It is 7.7 inches wide with 5.0 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 195/65R15 mean?
195/65R15 means a tire 195 mm wide, with sidewalls 65% as tall as the tire is wide (127 mm), radial construction (R), for a 15 inch wheel.
How many revolutions per mile does a 195/65R15 tire make?
About 807 revolutions per mile, based on a circumference of 78.5 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 195/65R15 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 255/50R15 instead of 195/65R15?
255/50R15 is +0.06 inches (+0.2%) in overall diameter, so at an indicated 60 mph you would be doing 60.1 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.

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