315/55R16 Tire Size in Inches

29.6" tall, 12.4" wide, 6.8" sidewall

Diameter29.6"753 mm
Overall diameter29.6"753 mm
Section width12.4"315 mm
Sidewall height6.8"173 mm
Circumference93.1"2365 mm
Revolutions per mile680423 per km
Wheel diameter16"≈ 29.6x12.4R16 in inches

A 315/55R16 tire is 29.6 inches (753 mm) tall and 12.4 inches wide. The sidewall is 55% of the width, 6.8 inches, on a 16-inch wheel, and the tire turns about 680 times per mile.

In flotation terms that is about 29.6x12.4R16. People often call it a 30-inch tire.

315/55R16
315/55R16
Diameter difference±0.00%diameter 29.64" → 29.64"
CurrentNew
CurrentNewDifference

Speedometer

ShowsActual speed

Gear ratio to match

–enter your current axle ratio

Same height on a different wheel

Sizes within 2% of 29.6" on 15" or 17" or 18" wheels.

SizeDiameterWidthSidewallvs 315/55R16
265/70R1529.6"10.4"7.3"−0.1%
265/60R1729.5"10.4"6.3"−0.4%
265/55R1829.5"10.4"5.7"−0.6%
245/75R1529.5"9.6"7.2"−0.6%
315/60R1529.9"12.4"7.4"+0.8%
225/70R1729.4"8.9"6.2"−0.8%

315/55R16 FAQ

How tall is a 315/55R16 tire?

29.6 inches (753 mm). The sidewall is 6.8 inches.

How wide is a 315/55R16 tire?

12.4 inches (315 mm) section width, measured sidewall to sidewall.

What is 315/55R16 in flotation size?

About 29.6x12.4R16.