255/60R15 tire size in inches

A 255/60R15 tire measures

27.0" tall × 10.0" wide

6.02" sidewall on a 15" wheel. 746 revolutions per mile.

255/60R15 means a tire 255 mm wide, with sidewalls 60% as tall as the tire is wide (153 mm), radial construction (R), for a 15 inch wheel.

27.0"15" rim6.0"10.0" wide
255/60R15: 27.0 inches tall, 10.0 inches wide, on a 15 inch rim, drawn to scale

255/60R15 specs

Overall diameter (height)27.05 inches (687 mm)
Section width10.04 inches (255 mm)
Sidewall height6.02 inches (153 mm)
Wheel (rim) diameter15 inches
Circumference85.0 inches (2,158 mm)
Revolutions per mile746
Revolutions per kilometer463
Approximate rim width7.0" to 8.5"
In inches (flotation style)27.0x10.0R15
Aspect ratio60%

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 255/60R15 on a 15" wheel

These 15" sizes are within 3% of 255/60R15's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
235/65R1527.03"9.25"−0.1%60.0 mphCompare
205/75R1527.11"8.07"+0.2%60.1 mphCompare
275/55R1526.91"10.83"−0.5%59.7 mphCompare
215/70R1526.85"8.46"−0.7%59.6 mphCompare
195/80R1527.28"7.68"+0.9%60.5 mphCompare
285/55R1527.34"11.22"+1.1%60.7 mphCompare
175/85R1526.71"6.89"−1.2%59.3 mphCompare
185/85R1527.38"7.28"+1.2%60.7 mphCompare
225/70R1527.40"8.86"+1.3%60.8 mphCompare
185/80R1526.65"7.28"−1.5%59.1 mphCompare
245/60R1526.57"9.65"−1.7%59.0 mphCompare
265/60R1527.52"10.43"+1.7%61.0 mphCompare

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

SizeWheelDiameterDifference
255/55R1616"27.04"0.0%Compare
195/85R1414"27.05"0.0%Compare
255/65R1414"27.05"0.0%Compare
255/50R1717"27.04"0.0%Compare
255/45R1818"27.04"0.0%Compare
255/40R1919"27.03"−0.1%Compare
255/35R2020"27.03"−0.1%Compare
175/80R1616"27.02"−0.1%Compare
205/50R1919"27.07"+0.1%Compare
255/30R2121"27.02"−0.1%Compare
255/25R2222"27.02"−0.1%Compare
225/40R2020"27.09"+0.1%Compare

One size up or down

Compare 255/60R15 with another size

With 265/60R15 tires, when your speedometer says 60 mph you are really going

61.0 mph

265/60R15 is +0.47 inches (+1.7%) in overall diameter. That is within the 3% most shops and makers allow.

255/60R15265/60R15Difference%
Overall diameter27.05"27.52"+0.47"+1.7%
Section width10.04"10.43"+0.39"+3.9%
Sidewall height6.02"6.26"+0.24"+3.9%
Circumference84.97"86.46"+1.48"+1.7%
Revolutions per mile745.7732.9−12.8−1.7%

Questions

How tall is a 255/60R15 tire?
A 255/60R15 tire is 27.0 inches tall (687 mm), calculated from the size. It is 10.0 inches wide with 6.0 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 255/60R15 mean?
255/60R15 means a tire 255 mm wide, with sidewalls 60% as tall as the tire is wide (153 mm), radial construction (R), for a 15 inch wheel.
How many revolutions per mile does a 255/60R15 tire make?
About 746 revolutions per mile, based on a circumference of 85.0 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 255/60R15 tire?
Roughly 7.0" to 8.5". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 235/65R15 instead of 255/60R15?
235/65R15 is −0.02 inches (−0.1%) 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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