195/40R14 Tire Size in Inches and Millimeters

195/40R14 tires have a diameter of 20.2" (512 mm), a tread width of 7.7" (195 mm), and a wheel diameter of 14" (355.6 mm).The sidewall of the tire is 3.1" (78 mm), and the tire's circumference is 63.4" (1607.7 mm). This means a 195/40R14 tire will make make 999 revolutions per mile, or 622 revolutions per kilometer.

195/40R14 Tire Front
7.7"
20.2"
195/40R14 Tire Side
Tire Circumference
63.4"
14"
3.1"
999 Revs/Mile
SpecInchesMetric
Diameter20.2"512 mm
Width7.7"195 mm
Wheel14"355.6 mm
Sidewall3.1"78 mm
Circum63.4"1607.7 mm
Revolutions999 per mile622 per km

What Does 195/40R14 Mean?

The tire size 195/40R14 is a common size used on many trucks, SUVs, and other larger vehicles.

Here is what each part of the size designation represents:

  • 195: This number represents the width of the tire in millimeters. In this case, the tire is 195 millimeters wide.
  • 40: 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 40% 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.
  • 14: 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 14-inch wheel.

195/40R14 tire size meaning

How To Convert 195/40R14 Into Inches

The 195/40R14 conversion is fairly simple. The first number in the tire size, 195, represents the width of the tire in millimeters. To convert this to inches, we divide 195 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 7.7 inches.

The second number in the tire size, 40, represents the aspect ratio or the height of the tire as a percentage of its width. To calculate the height in inches, we multiply 7.7 by 0.40, which gives us approximately 3.1 inches.

Finally, the last number in the tire size, 14, represents the diameter of the wheel rim in inches. Therefore, the tire size 195/40R14 can be expressed in inches as roughly 7.7 inches wide, 3.1 inches tall, and designed to fit a 14-inch wheel rim.

Frequently Asked Questions About 195/40R14 Tires

How tall is a 195/40R14 tire?

A 195/40R14 tire has an approximate height, also known as the overall diameter, of 20.2 inches (512 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 195/40R14 tire?

A 195/40R14 tire has a width of approximately 7.7 inches (195 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “195”. 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 195/40R14 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
105/70R1419.8"504 mm14 mm
105/80R1319.6"498 mm13 mm
115/70R1420.4"518 mm14 mm
125/80R1219.9"505 mm12 mm
135/70R1320.5"520 mm13 mm
135/80R1220.5"521 mm12 mm
145/60R1319.8"504 mm13 mm
145/65R1320.4"518 mm13 mm
145/70R1220"509 mm12 mm
155/55R1420.7"526 mm14 mm
155/70R1220.6"523 mm12 mm
155/80R1019.8"502 mm10 mm
165/50R1420.6"522 mm14 mm
165/55R1320.2"512 mm13 mm
165/60R1219.8"503 mm12 mm
175/50R1319.9"506 mm13 mm
175/55R1320.6"522 mm13 mm
195/40R1420.2"512 mm14 mm
195/45R1319.9"506 mm13 mm