355/60R20 Tire Size in Inches and Millimeters

355/60R20 tires have a diameter of 36.8" (934 mm), a tread width of 14" (355 mm), and a wheel diameter of 20" (508 mm).The sidewall of the tire is 8.4" (213 mm), and the tire's circumference is 115.6" (2932.8 mm). This means a 355/60R20 tire will make make 548 revolutions per mile, or 341 revolutions per kilometer.

355/60R20 Tire Front
14"
36.8"
355/60R20 Tire Side
Tire Circumference
115.6"
20"
8.4"
548 Revs/Mile
SpecInchesMetric
Diameter36.8"934 mm
Width14"355 mm
Wheel20"508 mm
Sidewall8.4"213 mm
Circum115.6"2932.8 mm
Revolutions548 per mile341 per km

What Does 355/60R20 Mean?

The tire size 355/60R20 is a common size used on many trucks, SUVs, and other larger vehicles.

Here is what each part of the size designation represents:

  • 355: This number represents the width of the tire in millimeters. In this case, the tire is 355 millimeters wide.
  • 60: This number represents the aspect ratio of the tire, which is the height of the tire's sidewall as a percentage of its width. In this case, the sidewall height is 60% of the tire's width.
  • R: This letter indicates the tire's construction type. “R” stands for radial construction, which is the most common type of tire construction today.
  • 20: This number represents the diameter of the wheel that the tire is designed to fit on, in inches. In this case, the tire is designed to fit on a 20-inch wheel.

355/60R20 tire size meaning

How To Convert 355/60R20 Into Inches

The 355/60R20 conversion is fairly simple. The first number in the tire size, 355, represents the width of the tire in millimeters. To convert this to inches, we divide 355 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 14 inches.

The second number in the tire size, 60, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 14 by 0.60, which gives us approximately 8.4 inches.

Finally, the last number in the tire size, 20, represents the diameter of the wheel rim in inches. Therefore, the tire size 355/60R20 can be expressed in inches as roughly 14 inches wide, 8.4 inches tall, and designed to fit a 20-inch wheel rim.

Set of 4 (FOUR) Venom Power Terra Hunter X/T XT All-Terrain Mud Radial Tires-275/60R20 275/60/20 275/60-20 115T Load Range SL 4-Ply BSW Black Side Wall
Set of 4 (FOUR) Venom Power Terra Hunter X/T XT All-Terrain Mud Radial Tires-275/60R20 275/60/20 275/60-20 115T Load Range SL 4-Ply BSW Black Side Wall
Treadlife: 50,000 miles; Season: All Season; Performance: Extreme Terrain; Car Type: Truck/SUV
$856.93
Set of 4 (FOUR) Haida HD878 R/T All-Terrain Mud Off-Road Light Truck Radial Tires-33X12.50R24LT 33X12.50X24 33X12.50-24 104Q Load Range E LRE 10-Ply BSW Black Side Wall
Set of 4 (FOUR) Haida HD878 R/T All-Terrain Mud Off-Road Light Truck Radial Tires-33X12.50R24LT 33X12.50X24 33X12.50-24 104Q Load Range E LRE 10-Ply BSW Black Side Wall
Treadlife: N/A; Season: All Season; Performance: Rugged Terrain; Car Type: Light Truck; Load Range E, 10-Ply Rated, 10-PR
$878.93
Set of 4 (FOUR) Haida Mud Champ HD868 M/T Mud Off-Road Light Truck Radial Tires-LT275/65R20 275/65/20 275/65-20 126/123Q Load Range E LRE 10-Ply BSW Black Side Wall
Set of 4 (FOUR) Haida Mud Champ HD868 M/T Mud Off-Road Light Truck Radial Tires-LT275/65R20 275/65/20 275/65-20 126/123Q Load Range E LRE 10-Ply BSW Black Side Wall
Treadlife: N/A; Season: All Season; Performance: Mud Terrain; Car Type: Light Truck; Load Range E, 10-Ply Rated, 10-PR
$892.93
Sale
Nitto Ridge Grappler All-Terrain Radial Tire - LT275/60R20 123Q
Nitto Ridge Grappler All-Terrain Radial Tire - LT275/60R20 123Q
Nitto Ridge Grappler All-Terrain Radial Tire - LT275/60R20 123Q; Premium quality tires from a trusted brand
$292.78

Frequently Asked Questions About 355/60R20 Tires

How tall is a 355/60R20 tire?

A 355/60R20 tire has an approximate height, also known as the overall diameter, of 36.8 inches (934 mm). This height can vary slightly depending on the brand and model of the tire, as well as the amount of air pressure in the tire.

How wide is a 355/60R20 tire?

A 355/60R20 tire has a width of approximately 14 inches (355 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “355”. It’s important to note that the actual width of the tire may vary slightly depending on the brand and model of the tire, and the width may also be affected by the amount of air pressure in the tire.

Alternate 355/60R20 Replacement Tire Sizes

Upsizing your wheels or tires? Replacement tires must be within 3% of the diametor of the original tire. The following sizes fall within that range - click on any size to see detailed info about that tire and wheel combination.

SizeDiameterWidthWheel
255/30R3036.1"916 mm30 mm
305/75R1836"915 mm18 mm
315/30R3037.5"952 mm30 mm
315/40R2635.9"912 mm26 mm
315/50R2436.5"926 mm24 mm
315/70R2037.4"950 mm20 mm
325/35R2837"939 mm28 mm
325/55R2236.1"917 mm22 mm
325/60R2237.4"949 mm22 mm
325/80R1636.5"926 mm16 mm
335/55R2236.5"927 mm22 mm
345/45R2436.2"920 mm24 mm
345/50R2437.6"956 mm24 mm
345/75R1636.4"924 mm16 mm
355/40R2637.2"944 mm26 mm
355/60R2036.8"934 mm20 mm
355/65R1836.2"919 mm18 mm
355/70R1736.6"930 mm17 mm
365/70R1636.1"918 mm16 mm
365/75R1637.6"954 mm16 mm
375/40R2435.8"910 mm24 mm
375/55R2036.2"920 mm20 mm
375/60R1835.7"907 mm18 mm
385/70R1637.2"946 mm16 mm
395/70R1637.8"960 mm16 mm