275/80R17 Tire Size in Inches

34.3" tall, 10.8" wide, 8.7" sidewall

Diameter34.3"872 mm
Overall diameter34.3"872 mm
Section width10.8"275 mm
Sidewall height8.7"220 mm
Circumference107.8"2739 mm
Revolutions per mile588365 per km
Wheel diameter17"≈ 34.3x10.8R17 in inches

A 275/80R17 tire is 34.3 inches (872 mm) tall and 10.8 inches wide. The sidewall is 80% of the width, 8.7 inches, on a 17-inch wheel, and the tire turns about 588 times per mile.

In flotation terms that is about 34.3x10.8R17. People often call it a 34-inch tire.

The size most often compared with it is 295/75R17, which is 0.1" taller (+0.3%). At an indicated 60 mph you would be doing 60.2 mph on it.

275/80R17
295/75R17
Diameter difference+0.29%diameter 34.32" → 34.42"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Sizes near 275/80R17

Same 17" wheel, within 20 mm of width and 10 points of aspect ratio.

SizeDiameterWidthSidewallvs 275/80R17
295/75R1734.4"11.6"8.7"+0.3%
255/85R1734.1"10.0"8.5"−0.7%
265/85R1734.7"10.4"8.9"+1.2%
285/75R1733.8"11.2"8.4"−1.4%
285/80R1735.0"11.2"9.0"+1.8%
265/80R1733.7"10.4"8.3"−1.8%
35x11.50R1735.0"11.5"9.0"+2.0%
295/70R1733.3"11.6"8.1"−3.1%
275/85R1735.4"10.8"9.2"+3.2%
255/80R1733.1"10.0"8.0"−3.7%

Same height on a different wheel

Sizes within 2% of 34.3" on 18" or 16" wheels.

SizeDiameterWidthSidewallvs 275/80R17
295/70R1834.3"11.6"8.1"−0.2%
275/75R1834.2"10.8"8.1"−0.2%
275/85R1634.4"10.8"9.2"+0.2%
315/65R1834.1"12.4"8.1"−0.6%
255/80R1834.1"10.0"8.0"−0.8%
315/75R1634.6"12.4"9.3"+0.8%

Speedometer with a different size

Actual speed when the speedometer is calibrated for 275/80R17.

Speedometer showson 295/75R17on 255/85R17on 265/85R17
30 mph30.1 mph29.8 mph30.4 mph
45 mph45.1 mph44.7 mph45.5 mph
60 mph60.2 mph59.6 mph60.7 mph
70 mph70.2 mph69.5 mph70.8 mph

275/80R17 FAQ

How tall is a 275/80R17 tire?

34.3 inches (872 mm). The sidewall is 8.7 inches.

How wide is a 275/80R17 tire?

10.8 inches (275 mm) section width, measured sidewall to sidewall.

What is 275/80R17 in flotation size?

About 34.3x10.8R17.

Can I use 295/75R17 instead of 275/80R17?

295/75R17 is +0.3% in diameter, within the common 3% guideline. It is 0.8" wider.