165/80R15 Tire Size in Inches and Millimeters

165/80R15 tires have a diameter of 25.4" (645 mm), a tread width of 6.5" (165 mm), and a wheel diameter of 15" (381 mm).The sidewall of the tire is 5.2" (132 mm), and the tire's circumference is 79.8" (2025.3 mm). This means a 165/80R15 tire will make make 794 revolutions per mile, or 494 revolutions per kilometer.

165/80R15 Tire Front
165/80R15 Tire Side
Tire Circumference
794 Revs/Mile
Diameter25.4"645 mm
Width6.5"165 mm
Wheel15"381 mm
Sidewall5.2"132 mm
Circum79.8"2025.3 mm
Revolutions794 per mile494 per km

What Does 165/80R15 Mean?

The tire size 165/80R15 is a common size used on many trucks, SUVs, and other larger vehicles.

Here is what each part of the size designation represents:

  • 165: This number represents the width of the tire in millimeters. In this case, the tire is 165 millimeters wide.
  • 80: 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 80% 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.
  • 15: 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 15-inch wheel.

165/80R15 tire size meaning

How To Convert 165/80R15 Into Inches

The 165/80R15 conversion is fairly simple. The first number in the tire size, 165, represents the width of the tire in millimeters. To convert this to inches, we divide 165 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 6.5 inches.

The second number in the tire size, 80, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 6.5 by 0.80, which gives us approximately 5.2 inches.

Finally, the last number in the tire size, 15, represents the diameter of the wheel rim in inches. Therefore, the tire size 165/80R15 can be expressed in inches as roughly 6.5 inches wide, 5.2 inches tall, and designed to fit a 15-inch wheel rim.

NEXEN SB802 All-Season Tire - 165/80R15 87T
NEXEN SB802 All-Season Tire - 165/80R15 87T
Made in United States; Package Height: 7.0"; Package Length: 26.0"; Package Width: 26.0"
Thunderer MACH I R201 all_ Season Radial Tire-165/80R15 87T
Thunderer MACH I R201 all_ Season Radial Tire-165/80R15 87T
Two free tread block design for excellent breaking performance; Wide center rib for improved handling and stability
Thunderer Mach 1 Touring Tire 165/80R15 87T SL Ply Rating 10 32nds Tread Depth
Thunderer Mach 1 Touring Tire 165/80R15 87T SL Ply Rating 10 32nds Tread Depth
Provide the traction needed on wet and dry roads; Engineered for high-mileage and built to last for small and midsize vehicles
Coker Tire 57982 Michelin XZX S rated 165R15
Coker Tire 57982 Michelin XZX S rated 165R15
These 15 inch radial tires feature Michelin's XZX tread pattern and an S speed rating.

Frequently Asked Questions About 165/80R15 Tires

How tall is a 165/80R15 tire?

A 165/80R15 tire has an approximate height, also known as the overall diameter, of 25.4 inches (645 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 165/80R15 tire?

A 165/80R15 tire has a width of approximately 6.5 inches (165 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “165”. 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 165/80R15 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.

115/70R1925.4"645 mm19 mm
115/95R1725.6"650 mm17 mm
125/70R1824.9"633 mm18 mm
125/70R1925.9"659 mm19 mm
125/80R1724.9"632 mm17 mm
125/90R1624.9"632 mm16 mm
135/60R1925.4"645 mm19 mm
135/70R1825.5"647 mm18 mm
135/80R1725.5"648 mm17 mm
135/90R1625.6"650 mm16 mm
145/65R1825.4"645 mm18 mm
145/70R1725"636 mm17 mm
145/70R1826"661 mm18 mm
145/80R1625.1"638 mm16 mm
145/80R1726.1"664 mm17 mm
155/60R1825.3"643 mm18 mm
155/70R1725.6"650 mm17 mm
155/80R1524.8"629 mm15 mm
155/80R1625.7"654 mm16 mm
165/70R1726.1"664 mm17 mm
165/80R1525.4"645 mm15 mm
175/70R1524.7"627 mm15 mm
175/75R1525.3"643 mm15 mm
175/80R1425"636 mm14 mm
185/55R1826"661 mm18 mm
185/60R1624.7"628 mm16 mm
185/60R1725.7"654 mm17 mm
185/65R1625.4"646 mm16 mm
185/70R1525.2"641 mm15 mm
185/75R1425"634 mm14 mm
185/80R1324.6"626 mm13 mm
185/80R1425.7"652 mm14 mm
195/50R1724.7"628 mm17 mm
195/55R1725.4"646 mm17 mm
195/60R1625.2"640 mm16 mm
195/65R1525"635 mm15 mm
195/65R1626"660 mm16 mm
195/70R1424.8"630 mm14 mm
195/70R1525.8"655 mm15 mm
195/75R1425.5"648 mm14 mm
205/45R1825.2"641 mm18 mm
205/50R1725.1"638 mm17 mm
205/50R1826.1"663 mm18 mm
205/55R1624.9"632 mm16 mm
205/55R1725.9"658 mm17 mm
205/60R1524.7"627 mm15 mm
205/60R1625.7"652 mm16 mm
205/65R1525.5"647 mm15 mm
205/70R1425.4"644 mm14 mm
205/75R1426.1"664 mm14 mm
215/30R2025.1"638 mm20 mm
215/35R1924.9"633 mm19 mm
215/40R1824.8"629 mm18 mm
215/40R1925.8"655 mm19 mm
215/45R1724.6"626 mm17 mm
215/45R1825.6"651 mm18 mm
215/50R1725.5"648 mm17 mm
215/55R1625.3"642 mm16 mm
215/60R1525.2"639 mm15 mm
215/60R1626.1"664 mm16 mm
215/65R1425"636 mm14 mm
215/65R1526"661 mm15 mm
215/70R1425.9"658 mm14 mm
225/30R2025.4"644 mm20 mm
225/35R1925.2"641 mm19 mm
225/40R1825.1"637 mm18 mm
225/40R1926.1"663 mm19 mm
225/45R1725"634 mm17 mm
225/45R1825.9"659 mm18 mm
225/50R1624.9"632 mm16 mm
225/50R1725.9"658 mm17 mm
225/55R1524.8"629 mm15 mm
225/55R1625.7"654 mm16 mm
225/60R1424.6"626 mm14 mm
225/60R1525.6"651 mm15 mm
235/30R2025.6"650 mm20 mm
235/35R1925.5"647 mm19 mm
235/40R1825.4"645 mm18 mm
235/45R1725.4"644 mm17 mm
235/50R1625.3"642 mm16 mm
235/55R1525.2"639 mm15 mm
235/55R1626.1"664 mm16 mm
235/60R1425.1"638 mm14 mm
235/60R1526.1"663 mm15 mm
245/30R1924.8"631 mm19 mm
245/30R2025.8"656 mm20 mm
245/35R1824.8"629 mm18 mm
245/35R1925.8"655 mm19 mm
245/40R1724.7"628 mm17 mm
245/40R1825.7"653 mm18 mm
245/45R1624.6"626 mm16 mm
245/45R1725.7"652 mm17 mm
245/50R1524.7"627 mm15 mm
245/50R1625.7"652 mm16 mm
245/60R1425.6"650 mm14 mm
255/30R1925.1"637 mm19 mm
255/30R2026.1"662 mm20 mm
255/35R1825"635 mm18 mm
255/35R1926"661 mm19 mm
255/40R1725"636 mm17 mm
255/40R1826"661 mm18 mm
255/45R1726.1"662 mm17 mm
255/50R1626.1"662 mm16 mm
255/55R1425"636 mm14 mm
255/55R1526"661 mm15 mm
255/60R1426.1"662 mm14 mm
265/30R1925.3"643 mm19 mm
265/35R1825.3"643 mm18 mm
265/40R1725.4"644 mm17 mm
265/45R1625.4"644 mm16 mm
265/50R1525.5"647 mm15 mm
275/25R2025.4"646 mm20 mm
275/30R1925.6"649 mm19 mm
275/35R1825.6"649 mm18 mm
275/40R1725.7"652 mm17 mm
275/45R1625.7"654 mm16 mm
275/50R1525.9"657 mm15 mm
285/25R2025.6"650 mm20 mm
285/30R1824.8"629 mm18 mm
285/30R1925.8"655 mm19 mm
285/35R1724.9"632 mm17 mm
285/35R1825.9"657 mm18 mm
285/40R1726"660 mm17 mm
295/25R1924.8"631 mm19 mm
295/25R2025.8"656 mm20 mm
295/30R1825"635 mm18 mm
295/30R1926"661 mm19 mm
295/35R1725.1"638 mm17 mm
295/35R1826.1"663 mm18 mm
305/25R1925"635 mm19 mm
305/25R2026"660 mm20 mm
305/30R1825.2"641 mm18 mm
305/35R1725.4"646 mm17 mm
315/25R1925.2"641 mm19 mm
315/30R1825.5"647 mm18 mm
315/35R1725.7"652 mm17 mm
315/40R1625.9"658 mm16 mm
335/25R1925.6"651 mm19 mm
335/30R1825.9"659 mm18 mm
355/25R1926"661 mm19 mm