265/85R16 Tire Size in Inches

33.7" tall, 10.4" wide, 8.9" sidewall

Diameter33.7"857 mm
Overall diameter33.7"857 mm
Section width10.4"265 mm
Sidewall height8.9"225 mm
Circumference106.0"2692 mm
Revolutions per mile598371 per km
Wheel diameter16"≈ 33.7x10.4R16 in inches

A 265/85R16 tire is 33.7 inches (857 mm) tall and 10.4 inches wide. The sidewall is 85% of the width, 8.9 inches, on a 16-inch wheel, and the tire turns about 598 times per mile.

In flotation terms that is about 33.7x10.4R16. People often call it a 34-inch tire.

The size most often compared with it is 285/80R16, which is 0.2" taller (+0.6%). At an indicated 60 mph you would be doing 60.4 mph on it.

265/85R16
285/80R16
Diameter difference+0.64%diameter 33.74" → 33.95"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Sizes near 265/85R16

Same 16" wheel, within 20 mm of width and 10 points of aspect ratio.

SizeDiameterWidthSidewallvs 265/85R16
285/80R1634.0"11.2"9.0"+0.6%
275/80R1633.3"10.8"8.7"−1.2%
255/85R1633.1"10.0"8.5"−2.0%
275/85R1634.4"10.8"9.2"+2.0%
285/75R1632.8"11.2"8.4"−2.7%
265/80R1632.7"10.4"8.3"−3.1%
245/85R1632.4"9.6"8.2"−4.0%
285/85R1635.1"11.2"9.5"+4.0%
275/75R1632.2"10.8"8.1"−4.4%
255/80R1632.1"10.0"8.0"−5.0%

Same height on a different wheel

Sizes within 2% of 33.7" on 18" or 17" wheels.

SizeDiameterWidthSidewallvs 265/85R16
285/70R1833.7"11.2"7.9"−0.1%
265/80R1733.7"10.4"8.3"−0.1%
305/70R1733.8"12.0"8.4"+0.2%
265/75R1833.6"10.4"7.8"−0.3%
285/75R1733.8"11.2"8.4"+0.3%
305/65R1833.6"12.0"7.8"−0.4%

Speedometer with a different size

Actual speed when the speedometer is calibrated for 265/85R16.

Speedometer showson 285/80R16on 275/80R16on 255/85R16
30 mph30.2 mph29.6 mph29.4 mph
45 mph45.3 mph44.4 mph44.1 mph
60 mph60.4 mph59.3 mph58.8 mph
70 mph70.4 mph69.1 mph68.6 mph

265/85R16 FAQ

How tall is a 265/85R16 tire?

33.7 inches (857 mm). The sidewall is 8.9 inches.

How wide is a 265/85R16 tire?

10.4 inches (265 mm) section width, measured sidewall to sidewall.

What is 265/85R16 in flotation size?

About 33.7x10.4R16.

Can I use 285/80R16 instead of 265/85R16?

285/80R16 is +0.6% in diameter, within the common 3% guideline. It is 0.8" wider.