325/25R20 Tire Size in Inches and Millimeters

325/25R20 tires have a diameter of 26.4" (670 mm), a tread width of 12.8" (325 mm), and a wheel diameter of 20" (508 mm).The sidewall of the tire is 3.2" (81 mm), and the tire's circumference is 82.9" (2103.8 mm). This means a 325/25R20 tire will make make 764 revolutions per mile, or 475 revolutions per kilometer.

325/25R20 Tire Front
12.8"
26.4"
325/25R20 Tire Side
Tire Circumference
82.9"
20"
3.2"
764 Revs/Mile
SpecInchesMetric
Diameter26.4"670 mm
Width12.8"325 mm
Wheel20"508 mm
Sidewall3.2"81 mm
Circum82.9"2103.8 mm
Revolutions764 per mile475 per km

What Does 325/25R20 Mean?

The tire size 325/25R20 is a common size used on many trucks, SUVs, and other larger vehicles.

Here is what each part of the size designation represents:

  • 325: This number represents the width of the tire in millimeters. In this case, the tire is 325 millimeters wide.
  • 25: 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 25% 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.

325/25R20 tire size meaning

How To Convert 325/25R20 Into Inches

The 325/25R20 conversion is fairly simple. The first number in the tire size, 325, represents the width of the tire in millimeters. To convert this to inches, we divide 325 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 12.8 inches.

The second number in the tire size, 25, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 12.8 by 0.25, which gives us approximately 3.2 inches.

Finally, the last number in the tire size, 20, represents the diameter of the wheel rim in inches. Therefore, the tire size 325/25R20 can be expressed in inches as roughly 12.8 inches wide, 3.2 inches tall, and designed to fit a 20-inch wheel rim.

Pirelli P ZERO Performance Radial Tire - 325/25R20 101Y
Pirelli P ZERO Performance Radial Tire - 325/25R20 101Y
This product is not for sale in the state of Arkansas
325/25R20 Lexani LX-TWENTY 101Y XL Tire
325/25R20 Lexani LX-TWENTY 101Y XL Tire
Unmatched performance and design; Package Dimensions: 25 H x 25 L x 7 W (inches); Package Weight: 80.0 pounds
$236.62
MICHELIN Pilot Sport 4 S Performance Radial Tire-325/25ZR20/XL 101Y
MICHELIN Pilot Sport 4 S Performance Radial Tire-325/25ZR20/XL 101Y
Ultra high performance premium tires; High speed tire for car enthusiast; A street tire suitable for some track usage
$516.99
Set of 4 (FOUR) Venom Power Ragnarok Zero All-Season High Performance Radial Tires-295/25R22 295/25ZR22 295/25/22 295/25-22 97W Load Range XL 4-Ply BSW Black Side Wall
Set of 4 (FOUR) Venom Power Ragnarok Zero All-Season High Performance Radial Tires-295/25R22 295/25ZR22 295/25/22 295/25-22 97W Load Range XL 4-Ply BSW Black Side Wall
Treadlife: N/A; Season: All Season; Performance: High Performance; Car Type: Passenger; Load Range XL, 4-Ply Rated, 4-PR
$492.93

Frequently Asked Questions About 325/25R20 Tires

How tall is a 325/25R20 tire?

A 325/25R20 tire has an approximate height, also known as the overall diameter, of 26.4 inches (670 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 325/25R20 tire?

A 325/25R20 tire has a width of approximately 12.8 inches (325 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “325”. 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 325/25R20 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
115/95R1725.6"650 mm17 mm
125/70R1925.9"659 mm19 mm
135/70R1926.5"673 mm19 mm
135/80R1826.5"673 mm18 mm
135/90R1625.6"650 mm16 mm
135/90R1726.6"676 mm17 mm
145/60R2026.9"682 mm20 mm
145/70R1826"661 mm18 mm
145/80R1726.1"664 mm17 mm
145/80R1827.1"689 mm18 mm
145/90R1626.3"668 mm16 mm
155/70R1725.6"650 mm17 mm
155/70R1826.6"675 mm18 mm
155/80R1625.7"654 mm16 mm
155/80R1726.8"680 mm17 mm
155/90R1627"686 mm16 mm
165/70R1726.1"664 mm17 mm
165/70R1827.1"689 mm18 mm
165/80R1626.4"670 mm16 mm
175/75R1626.3"668 mm16 mm
175/80R1627"686 mm16 mm
185/55R1826"661 mm18 mm
185/60R1725.7"654 mm17 mm
185/75R1626.9"684 mm16 mm
185/80R1425.7"652 mm14 mm
185/80R1526.7"677 mm15 mm
195/65R1626"660 mm16 mm
195/70R1525.8"655 mm15 mm
195/75R1526.5"673 mm15 mm
195/80R1426.3"668 mm14 mm
205/50R1826.1"663 mm18 mm
205/55R1725.9"658 mm17 mm
205/55R1826.9"683 mm18 mm
205/60R1625.7"652 mm16 mm
205/60R1726.7"678 mm17 mm
205/65R1626.5"672 mm16 mm
205/70R1526.3"669 mm15 mm
205/75R1426.1"664 mm14 mm
205/75R1527.1"689 mm15 mm
215/40R1925.8"655 mm19 mm
215/45R1825.6"651 mm18 mm
215/50R1826.5"673 mm18 mm
215/55R1726.3"668 mm17 mm
215/60R1626.1"664 mm16 mm
215/60R1727.2"690 mm17 mm
215/65R1526"661 mm15 mm
215/65R1627"686 mm16 mm
215/70R1425.9"658 mm14 mm
215/70R1526.9"683 mm15 mm
215/75R1426.7"678 mm14 mm
225/35R2026.2"666 mm20 mm
225/40R1926.1"663 mm19 mm
225/40R2027.1"688 mm20 mm
225/45R1825.9"659 mm18 mm
225/45R1927"685 mm19 mm
225/50R1725.9"658 mm17 mm
225/50R1826.9"683 mm18 mm
225/55R1625.7"654 mm16 mm
225/55R1726.8"680 mm17 mm
225/60R1525.6"651 mm15 mm
225/60R1626.6"676 mm16 mm
225/65R1526.5"673 mm15 mm
225/70R1426.5"672 mm14 mm
235/30R2025.6"650 mm20 mm
235/30R2126.6"675 mm21 mm
235/35R2026.5"672 mm20 mm
235/40R1926.4"671 mm19 mm
235/45R1826.3"669 mm18 mm
235/50R1726.3"668 mm17 mm
235/55R1626.1"664 mm16 mm
235/55R1727.2"690 mm17 mm
235/60R1526.1"663 mm15 mm
235/60R1627.1"688 mm16 mm
235/65R1527"687 mm15 mm
235/70R1427"686 mm14 mm
240/55R1626.4"670 mm16 mm
245/30R2025.8"656 mm20 mm
245/30R2126.8"681 mm21 mm
245/35R1925.8"655 mm19 mm
245/35R2026.8"680 mm20 mm
245/40R1825.7"653 mm18 mm
245/40R1926.7"679 mm19 mm
245/45R1725.7"652 mm17 mm
245/45R1826.7"677 mm18 mm
245/50R1625.7"652 mm16 mm
245/50R1726.7"678 mm17 mm
245/55R1626.6"676 mm16 mm
245/60R1425.6"650 mm14 mm
245/60R1526.6"675 mm15 mm
255/30R2026.1"662 mm20 mm
255/30R2127"687 mm21 mm
255/35R1926"661 mm19 mm
255/35R2027"686 mm20 mm
255/40R1826"661 mm18 mm
255/40R1927"687 mm19 mm
255/45R1726.1"662 mm17 mm
255/45R1827"687 mm18 mm
255/50R1626.1"662 mm16 mm
255/50R1727.1"688 mm17 mm
255/55R1526"661 mm15 mm
255/55R1627"686 mm16 mm
255/60R1426.1"662 mm14 mm
255/60R1527"687 mm15 mm
265/30R2026.3"668 mm20 mm
265/35R1926.3"669 mm19 mm
265/40R1826.3"669 mm18 mm
265/50R1626.5"672 mm16 mm
265/60R1426.5"674 mm14 mm
275/25R2126.4"671 mm21 mm
275/30R2026.5"674 mm20 mm
275/35R1926.6"675 mm19 mm
275/40R1725.7"652 mm17 mm
275/40R1826.7"677 mm18 mm
275/45R1625.7"654 mm16 mm
275/50R1525.9"657 mm15 mm
275/50R1626.9"682 mm16 mm
275/55R1526.9"683 mm15 mm
275/60R1427"686 mm14 mm
285/25R2025.6"650 mm20 mm
285/30R1925.8"655 mm19 mm
285/30R2026.8"680 mm20 mm
285/35R1825.9"657 mm18 mm
285/35R1926.9"683 mm19 mm
285/40R1726"660 mm17 mm
285/40R1827"685 mm18 mm
285/50R1526.3"667 mm15 mm
295/25R2025.8"656 mm20 mm
295/25R2126.8"681 mm21 mm
295/30R1926"661 mm19 mm
295/30R2027"686 mm20 mm
295/35R1826.1"663 mm18 mm
295/35R1927.1"689 mm19 mm
295/40R1726.3"668 mm17 mm
295/50R1526.7"677 mm15 mm
305/25R2026"660 mm20 mm
305/25R2127"685 mm21 mm
305/30R1926.3"667 mm19 mm
305/35R1826.4"671 mm18 mm
305/50R1527"687 mm15 mm
315/25R2026.2"666 mm20 mm
315/30R1926.5"673 mm19 mm
315/35R1725.7"652 mm17 mm
315/35R1826.7"677 mm18 mm
315/40R1625.9"658 mm16 mm
315/45R1627.2"690 mm16 mm
325/25R2026.4"670 mm20 mm
325/30R1926.7"679 mm19 mm
325/35R1827"685 mm18 mm
335/25R1925.6"651 mm19 mm
335/25R2026.6"676 mm20 mm
335/30R1825.9"659 mm18 mm
335/30R1927"685 mm19 mm
335/35R1726.2"666 mm17 mm
345/25R2026.8"680 mm20 mm
345/30R1826.2"665 mm18 mm
355/25R1926"661 mm19 mm
355/40R1627.2"690 mm16 mm
375/20R2126.9"683 mm21 mm