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265/60R18 is 30.5 inches tall

A 265/60R18 tire measures 30.5 in (775 mm) in overall diameter and 10.4 in (265 mm) across, with a 6.3 in (159 mm) sidewall on an 18-inch wheel. It turns 661 times per mile.

Overall diameter
30.5 in
775 mm
Section width
10.4 in
265 mm
Sidewall height
6.3 in
159 mm, 60% of width
Revs per mile
661
411 per km

265/60R18 in inches and millimeters

DimensionInchesMillimeters
Section width10.4 in265 mm
Aspect ratio60%60% of width
Wheel diameter18 in457 mm
Sidewall height6.3 in159 mm
Overall diameter30.5 in775 mm
Circumference95.9 in2,435 mm
Revolutions per mile661411 per km

Cross-section to scale

265 mm Section width 775 mm Overall diameter 159 mm Sidewall R18 · 457 mm Rim diameter

Nominal dimensions from the size code. A real 265/60R18 varies about 1 to 2 percent by brand, tread depth and inflation pressure.

Sizes equivalent to 265/60R18

Common sizes within 3 percent of 30.5 in overall diameter and 20 mm of width: first on the same 18-inch wheel, then one wheel size up, then one down, nearest match first in each group. The speedometer column is what the dial reads at a true 60 mph.

SizeWheelDiameterDifferenceWidthSpeedo at 60
245/65R18 18 in 30.5 in +0.1% (+1 mm) -20 mm 60.0 mph Compare
255/60R18 18 in 30.0 in -1.5% (-12 mm) -10 mm 60.9 mph Compare
255/65R18 18 in 31.1 in +1.7% (+14 mm) -10 mm 59.0 mph Compare
265/55R19 19 in 30.5 in -0.1% (-1 mm) 0 mm 60.1 mph Compare
275/55R19 19 in 30.9 in +1.3% (+10 mm) +10 mm 59.2 mph Compare
255/55R19 19 in 30.0 in -1.6% (-12 mm) -10 mm 61.0 mph Compare
275/50R19 19 in 29.8 in -2.3% (-18 mm) +10 mm 61.4 mph Compare
245/55R19 19 in 29.6 in -3.0% (-23 mm) -20 mm 61.8 mph Compare
245/70R17 17 in 30.5 in -0.1% (-0 mm) -20 mm 60.0 mph Compare
265/65R17 17 in 30.6 in +0.1% (+1 mm) 0 mm 59.9 mph Compare
255/65R17 17 in 30.1 in -1.5% (-12 mm) -10 mm 60.9 mph Compare
255/70R17 17 in 31.1 in +1.8% (+14 mm) -10 mm 59.0 mph Compare
275/65R17 17 in 31.1 in +1.8% (+14 mm) +10 mm 58.9 mph Compare

What 265/60R18 means

265 is the section width in millimeters (10.4 in). 60 is the aspect ratio: the sidewall is 60 percent of the width, so 265 × 0.60 = 159 mm (6.3 in). R is radial construction, and 18 is the wheel diameter in inches (457 mm). Stack two sidewalls on the wheel and you get the overall diameter: 457 + 2 × 159 = 775 mm, or 30.5 in.

A full marking adds a load index and speed rating after the size, for example 265/60R18 91V. Those two codes set how much weight and speed the tire is certified for; look them up in the load index chart and the speed rating chart.

Plus and minus sizing from 265/60R18

Going up one wheel size, the closest match is 265/55R19 at -0.1% diameter with a 146 mm sidewall instead of 159 mm. Going down one size, 245/70R17 is -0.1% with a taller 172 mm sidewall for more comfort and pothole margin. Anything inside 3 percent keeps the speedometer, ABS and gearing effectively stock; the comparison calculator shows the full speedometer table for any pair.

Which cars come with 265/60R18

Typical factory fitments include Dodge Durango, Jeep Grand Cherokee Laredo (2011-2021) and Toyota Land Cruiser Prado (150). Tire size changes with trim and wheel option, so confirm on the door-jamb placard before buying.

Frequently asked questions

How tall is a 265/60R18 tire?

30.5 inches (775 mm) in overall diameter: the 18-inch wheel (457 mm) plus two 159 mm sidewalls. Real tires land within about 1 to 2 percent of that depending on brand, tread depth and pressure.

What is 265/60R18 in inches?

30.5 x 10.4 R18: 30.5 inches tall, 10.4 inches wide, on an 18-inch wheel. The sidewall is 6.3 inches and the circumference is 95.9 inches, so the tire turns 661 times per mile.

What tire sizes are equivalent to 265/60R18?

Within 3 percent of the same diameter on the same 18-inch wheel: 245/65R18 (+0.1%), 255/60R18 (-1.5%), 255/65R18 (+1.7%); on a 19-inch wheel: 265/55R19 (-0.1%), 275/55R19 (+1.3%); on a 17-inch wheel: 245/70R17 (-0.1%), 265/65R17 (+0.1%). The percentage is the diameter change, which is also your speedometer error.

Related tools

Tire size calculator

Change any of the three numbers and watch the diameter move.

Compare 265/60R18 with another size

Diameter change, ride height and a full speedometer table.

All 18-inch tire sizes

Every common size on an 18-inch wheel, with diameters.

Wheel offset calculator

Will a wider wheel still clear the fender and the strut?