305/25R19 Tire Size in Inches and Millimeters

305/25R19 tires have a diameter of 25" (635 mm), a tread width of 12" (305 mm), and a wheel diameter of 19" (482.6 mm).The sidewall of the tire is 3" (76 mm), and the tire's circumference is 78.5" (1993.9 mm). This means a 305/25R19 tire will make make 807 revolutions per mile, or 502 revolutions per kilometer.

305/25R19 Tire Front
12"
25"
305/25R19 Tire Side
Tire Circumference
78.5"
19"
3"
807 Revs/Mile
SpecInchesMetric
Diameter25"635 mm
Width12"305 mm
Wheel19"482.6 mm
Sidewall3"76 mm
Circum78.5"1993.9 mm
Revolutions807 per mile502 per km

What Does 305/25R19 Mean?

The tire size 305/25R19 is a common size used on many trucks, SUVs, and other larger vehicles.

Here is what each part of the size designation represents:

  • 305: This number represents the width of the tire in millimeters. In this case, the tire is 305 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.
  • 19: 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 19-inch wheel.

305/25R19 tire size meaning

How To Convert 305/25R19 Into Inches

The 305/25R19 conversion is fairly simple. The first number in the tire size, 305, represents the width of the tire in millimeters. To convert this to inches, we divide 305 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 12 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 by 0.25, which gives us approximately 3 inches.

Finally, the last number in the tire size, 19, represents the diameter of the wheel rim in inches. Therefore, the tire size 305/25R19 can be expressed in inches as roughly 12 inches wide, 3 inches tall, and designed to fit a 19-inch wheel rim.

Frequently Asked Questions About 305/25R19 Tires

How tall is a 305/25R19 tire?

A 305/25R19 tire has an approximate height, also known as the overall diameter, of 25 inches (635 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 305/25R19 tire?

A 305/25R19 tire has a width of approximately 12 inches (305 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “305”. 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 305/25R19 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
115/70R1925.4"645 mm19 mm
115/95R1725.6"650 mm17 mm
125/70R1824.9"633 mm18 mm
125/80R1724.9"632 mm17 mm
125/85R1624.3"618 mm16 mm
125/90R1624.9"632 mm16 mm
135/60R1824.4"619 mm18 mm
135/60R1925.4"645 mm19 mm
135/70R1724.5"622 mm17 mm
135/70R1825.5"647 mm18 mm
135/80R1624.5"622 mm16 mm
135/80R1725.5"648 mm17 mm
135/90R1524.6"625 mm15 mm
135/90R1625.6"650 mm16 mm
145/65R1825.4"645 mm18 mm
145/70R1725"636 mm17 mm
145/80R1625.1"638 mm16 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
165/80R1424.4"620 mm14 mm
165/80R1525.4"645 mm15 mm
175/55R1724.6"624 mm17 mm
175/60R1624.3"616 mm16 mm
175/70R1524.7"627 mm15 mm
175/75R1424.3"618 mm14 mm
175/75R1525.3"643 mm15 mm
175/80R1425"636 mm14 mm
185/50R1724.3"618 mm17 mm
185/60R1624.7"628 mm16 mm
185/60R1725.7"654 mm17 mm
185/65R1524.4"621 mm15 mm
185/65R1625.4"646 mm16 mm
185/70R1424.3"616 mm14 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
195/55R1624.4"620 mm16 mm
195/55R1725.4"646 mm17 mm
195/60R1625.2"640 mm16 mm
195/65R1525"635 mm15 mm
195/70R1424.8"630 mm14 mm
195/75R1425.5"648 mm14 mm
205/40R1824.4"621 mm18 mm
205/45R1724.3"616 mm17 mm
205/45R1825.2"641 mm18 mm
205/50R1725.1"638 mm17 mm
205/55R1624.9"632 mm16 mm
205/60R1524.7"627 mm15 mm
205/60R1625.7"652 mm16 mm
205/65R1424.5"622 mm14 mm
205/65R1525.5"647 mm15 mm
205/70R1324.3"618 mm13 mm
205/70R1425.4"644 mm14 mm
215/30R2025.1"638 mm20 mm
215/35R1924.9"633 mm19 mm
215/40R1824.8"629 mm18 mm
215/45R1724.6"626 mm17 mm
215/45R1825.6"651 mm18 mm
215/50R1624.5"622 mm16 mm
215/50R1725.5"648 mm17 mm
215/55R1524.3"617 mm15 mm
215/55R1625.3"642 mm16 mm
215/60R1525.2"639 mm15 mm
215/65R1425"636 mm14 mm
225/30R1924.4"619 mm19 mm
225/30R2025.4"644 mm20 mm
225/35R1925.2"641 mm19 mm
225/40R1825.1"637 mm18 mm
225/45R1725"634 mm17 mm
225/50R1624.9"632 mm16 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
235/30R1924.6"625 mm19 mm
235/30R2025.6"650 mm20 mm
235/35R1824.4"621 mm18 mm
235/35R1925.5"647 mm19 mm
235/40R1724.4"620 mm17 mm
235/40R1825.4"645 mm18 mm
235/45R1725.4"644 mm17 mm
235/50R1524.3"617 mm15 mm
235/50R1625.3"642 mm16 mm
235/55R1525.2"639 mm15 mm
235/60R1425.1"638 mm14 mm
245/30R1924.8"631 mm19 mm
245/35R1824.8"629 mm18 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
255/35R1825"635 mm18 mm
255/40R1725"636 mm17 mm
255/55R1425"636 mm14 mm
265/30R1824.3"617 mm18 mm
265/30R1925.3"643 mm19 mm
265/35R1724.3"618 mm17 mm
265/35R1825.3"643 mm18 mm
265/40R1725.4"644 mm17 mm
265/45R1625.4"644 mm16 mm
265/50R1424.5"622 mm14 mm
265/50R1525.5"647 mm15 mm
275/25R2025.4"646 mm20 mm
275/30R1925.6"649 mm19 mm
275/35R1724.6"624 mm17 mm
275/35R1825.6"649 mm18 mm
275/40R1725.7"652 mm17 mm
275/45R1625.7"654 mm16 mm
285/25R2025.6"650 mm20 mm
285/30R1824.8"629 mm18 mm
285/35R1724.9"632 mm17 mm
295/25R1924.8"631 mm19 mm
295/30R1825"635 mm18 mm
295/35R1725.1"638 mm17 mm
305/25R1925"635 mm19 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
335/25R1925.6"651 mm19 mm
345/35R1524.5"623 mm15 mm