275/55R17 Tire Size in Inches

28.9" tall, 10.8" wide, 6.0" sidewall

Diameter28.9"734 mm
Overall diameter28.9"734 mm
Section width10.8"275 mm
Sidewall height6.0"151 mm
Circumference90.8"2307 mm
Revolutions per mile698433 per km
Wheel diameter17"≈ 28.9x10.8R17 in inches

A 275/55R17 tire is 28.9 inches (734 mm) tall and 10.8 inches wide. The sidewall is 55% of the width, 6.0 inches, on a 17-inch wheel, and the tire turns about 698 times per mile.

In flotation terms that is about 28.9x10.8R17. People often call it a 29-inch tire.

The size most often compared with it is 285/55R17, which is 0.4" taller (+1.5%). At an indicated 60 mph you would be doing 60.9 mph on it.

275/55R17
285/55R17
Diameter difference+1.50%diameter 28.91" → 29.34"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Sizes near 275/55R17

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

SizeDiameterWidthSidewallvs 275/55R17
285/55R1729.3"11.2"6.2"+1.5%
265/60R1729.5"10.4"6.3"+2.1%
275/50R1727.8"10.8"5.4"−3.7%
275/60R1730.0"10.8"6.5"+3.7%
255/65R1730.1"10.0"6.5"+3.9%
265/50R1727.4"10.4"5.2"−5.1%
285/60R1730.5"11.2"6.7"+5.4%
265/65R1730.6"10.4"6.8"+5.7%
285/45R1727.1"11.2"5.0"−6.3%
275/65R1731.1"10.8"7.0"+7.5%

Same height on a different wheel

Sizes within 2% of 28.9" on 16" or 15" or 18" wheels.

SizeDiameterWidthSidewallvs 275/55R17
205/80R1628.9"8.1"6.5"+0.0%
295/60R1528.9"11.6"7.0"+0.1%
235/75R1528.9"9.3"6.9"−0.1%
275/50R1828.8"10.8"5.4"−0.3%
275/60R1629.0"10.8"6.5"+0.3%
255/70R1529.1"10.0"7.0"+0.5%

Speedometer with a different size

Actual speed when the speedometer is calibrated for 275/55R17.

Speedometer showson 285/55R17on 265/60R17on 275/50R17
30 mph30.4 mph30.6 mph28.9 mph
45 mph45.7 mph45.9 mph43.3 mph
60 mph60.9 mph61.3 mph57.8 mph
70 mph71.0 mph71.5 mph67.4 mph

275/55R17 FAQ

How tall is a 275/55R17 tire?

28.9 inches (734 mm). The sidewall is 6.0 inches.

How wide is a 275/55R17 tire?

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

What is 275/55R17 in flotation size?

About 28.9x10.8R17.

Can I use 285/55R17 instead of 275/55R17?

285/55R17 is +1.5% in diameter, within the common 3% guideline. It is 0.4" wider.