195/85R15 tire size in inches

A 195/85R15 tire measures

28.1" tall × 7.7" wide

6.53" sidewall on a 15" wheel. 719 revolutions per mile.

195/85R15 means a tire 195 mm wide, with sidewalls 85% as tall as the tire is wide (166 mm), radial construction (R), for a 15 inch wheel.

28.1"15" rim6.5"7.7" wide
195/85R15: 28.1 inches tall, 7.7 inches wide, on a 15 inch rim, drawn to scale

195/85R15 specs

Overall diameter (height)28.05 inches (713 mm)
Section width7.68 inches (195 mm)
Sidewall height6.53 inches (166 mm)
Wheel (rim) diameter15 inches
Circumference88.1 inches (2,238 mm)
Revolutions per mile719
Revolutions per kilometer447
Approximate rim width5.0" to 6.5"
In inches (flotation style)28.1x7.7R15
Aspect ratio85%

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 195/85R15 on a 15" wheel

These 15" sizes are within 3% of 195/85R15's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
255/65R1528.05"10.04"0.0%60.0 mphCompare
275/60R1527.99"10.83"−0.2%59.9 mphCompare
235/70R1527.95"9.25"−0.4%59.8 mphCompare
205/80R1527.91"8.07"−0.5%59.7 mphCompare
225/75R1528.29"8.86"+0.8%60.5 mphCompare
215/75R1527.70"8.46"−1.3%59.2 mphCompare
285/60R1528.46"11.22"+1.5%60.9 mphCompare
245/70R1528.50"9.65"+1.6%61.0 mphCompare
215/80R1528.54"8.46"+1.8%61.1 mphCompare
265/65R1528.56"10.43"+1.8%61.1 mphCompare
245/65R1527.54"9.65"−1.8%58.9 mphCompare
265/60R1527.52"10.43"−1.9%58.9 mphCompare

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

SizeWheelDiameterDifference
255/70R1414"28.06"0.0%Compare
255/60R1616"28.05"0.0%Compare
225/85R1313"28.06"0.0%Compare
255/55R1717"28.04"0.0%Compare
255/50R1818"28.04"0.0%Compare
255/45R1919"28.04"−0.1%Compare
255/40R2020"28.03"−0.1%Compare
235/65R1616"28.03"−0.1%Compare
255/35R2121"28.03"−0.1%Compare
255/30R2222"28.02"−0.1%Compare
225/40R2121"28.09"+0.1%Compare
285/45R1818"28.10"+0.2%Compare

One size up or down

Compare 195/85R15 with another size

With 205/85R15 tires, when your speedometer says 60 mph you are really going

61.4 mph

205/85R15 is +0.67 inches (+2.4%) in overall diameter. That is within the 3% most shops and makers allow.

195/85R15205/85R15Difference%
Overall diameter28.05"28.72"+0.67"+2.4%
Section width7.68"8.07"+0.39"+5.1%
Sidewall height6.53"6.86"+0.33"+5.1%
Circumference88.13"90.23"+2.10"+2.4%
Revolutions per mile719.0702.2−16.8−2.3%

Questions

How tall is a 195/85R15 tire?
A 195/85R15 tire is 28.1 inches tall (713 mm), calculated from the size. It is 7.7 inches wide with 6.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 195/85R15 mean?
195/85R15 means a tire 195 mm wide, with sidewalls 85% as tall as the tire is wide (166 mm), radial construction (R), for a 15 inch wheel.
How many revolutions per mile does a 195/85R15 tire make?
About 719 revolutions per mile, based on a circumference of 88.1 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 195/85R15 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 255/65R15 instead of 195/85R15?
255/65R15 is 0.00 inches (0.0%) 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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