275/50R17 Tire Size in Inches

27.8" tall, 10.8" wide, 5.4" sidewall

Diameter27.8"707 mm
Overall diameter27.8"707 mm
Section width10.8"275 mm
Sidewall height5.4"138 mm
Circumference87.4"2220 mm
Revolutions per mile725450 per km
Wheel diameter17"≈ 27.8x10.8R17 in inches

A 275/50R17 tire is 27.8 inches (707 mm) tall and 10.8 inches wide. The sidewall is 50% of the width, 5.4 inches, on a 17-inch wheel, and the tire turns about 725 times per mile.

In flotation terms that is about 27.8x10.8R17. People often call it a 28-inch tire.

The size most often compared with it is 265/50R17, which is 0.4" shorter (−1.4%). At an indicated 60 mph you would be doing 59.2 mph on it.

275/50R17
265/50R17
Diameter difference−1.41%diameter 27.83" → 27.43"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Sizes near 275/50R17

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

SizeDiameterWidthSidewallvs 275/50R17
265/50R1727.4"10.4"5.2"−1.4%
285/45R1727.1"11.2"5.0"−2.6%
275/55R1728.9"10.8"6.0"+3.9%
285/55R1729.3"11.2"6.2"+5.4%
295/40R1726.3"11.6"4.6"−5.5%
265/60R1729.5"10.4"6.3"+6.1%
255/45R1726.0"10.0"4.5"−6.4%
285/40R1726.0"11.2"4.5"−6.6%
275/40R1725.7"10.8"4.3"−7.8%
275/60R1730.0"10.8"6.5"+7.8%

Same height on a different wheel

Sizes within 2% of 27.8" on 15" or 18" wheels.

SizeDiameterWidthSidewallvs 275/50R17
325/50R1527.8"12.8"6.4"−0.1%
295/55R1527.8"11.6"6.4"−0.2%
275/45R1827.7"10.8"4.9"−0.3%
235/70R1528.0"9.3"6.5"+0.5%
215/75R1527.7"8.5"6.3"−0.5%
275/60R1528.0"10.8"6.5"+0.6%

Speedometer with a different size

Actual speed when the speedometer is calibrated for 275/50R17.

Speedometer showson 265/50R17on 285/45R17on 275/55R17
30 mph29.6 mph29.2 mph31.2 mph
45 mph44.4 mph43.8 mph46.8 mph
60 mph59.2 mph58.4 mph62.3 mph
70 mph69.0 mph68.2 mph72.7 mph

275/50R17 FAQ

How tall is a 275/50R17 tire?

27.8 inches (707 mm). The sidewall is 5.4 inches.

How wide is a 275/50R17 tire?

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

What is 275/50R17 in flotation size?

About 27.8x10.8R17.

Can I use 265/50R17 instead of 275/50R17?

265/50R17 is −1.4% in diameter, within the common 3% guideline. It is 0.4" narrower.