345/60R18 Tire Size in Inches and Millimeters
345/60R18 tires have a diameter of 34.3" (871 mm), a tread width of 13.6" (345 mm), and a wheel diameter of 18" (457.2 mm).The sidewall of the tire is 8.1" (207 mm), and the tire's circumference is 107.7" (2734.9 mm). This means a 345/60R18 tire will make make 588 revolutions per mile, or 366 revolutions per kilometer.
| Spec | Inches | Metric |
|---|---|---|
| Diameter | 34.3" | 871 mm |
| Width | 13.6" | 345 mm |
| Wheel | 18" | 457.2 mm |
| Sidewall | 8.1" | 207 mm |
| Circum | 107.7" | 2734.9 mm |
| Revolutions | 588 per mile | 366 per km |
What Does 345/60R18 Mean?
The tire size 345/60R18 is a common size used on many trucks, SUVs, and other larger vehicles.
Here is what each part of the size designation represents:
- 345: This number represents the width of the tire in millimeters. In this case, the tire is 345 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.
- 18: 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 18-inch wheel.
How To Convert 345/60R18 Into Inches
The 345/60R18 conversion is fairly simple. The first number in the tire size, 345, represents the width of the tire in millimeters. To convert this to inches, we divide 345 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 13.6 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 13.6 by 0.60, which gives us approximately 8.1 inches.
Finally, the last number in the tire size, 18, represents the diameter of the wheel rim in inches. Therefore, the tire size 345/60R18 can be expressed in inches as roughly 13.6 inches wide, 8.1 inches tall, and designed to fit a 18-inch wheel rim.
Frequently Asked Questions About 345/60R18 Tires
How tall is a 345/60R18 tire?
A 345/60R18 tire has an approximate height, also known as the overall diameter, of 34.3 inches (871 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 345/60R18 tire?
A 345/60R18 tire has a width of approximately 13.6 inches (345 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “345”. 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 345/60R18 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.
| Size | Diameter | Width | Wheel |
|---|---|---|---|
| 275/25R28 | 33.4" | 849 mm | 28 mm |
| 275/55R22 | 33.9" | 861 mm | 22 mm |
| 275/65R20 | 34.1" | 866 mm | 20 mm |
| 275/80R17 | 34.3" | 872 mm | 17 mm |
| 275/80R18 | 35.3" | 897 mm | 18 mm |
| 285/50R22 | 33.3" | 845 mm | 22 mm |
| 285/55R22 | 34.4" | 873 mm | 22 mm |
| 285/60R20 | 33.5" | 850 mm | 20 mm |
| 285/65R20 | 34.6" | 878 mm | 20 mm |
| 285/70R18 | 33.7" | 857 mm | 18 mm |
| 285/75R17 | 33.9" | 860 mm | 17 mm |
| 285/75R18 | 34.8" | 885 mm | 18 mm |
| 295/25R28 | 33.8" | 859 mm | 28 mm |
| 295/40R24 | 33.3" | 846 mm | 24 mm |
| 295/45R24 | 34.5" | 876 mm | 24 mm |
| 295/50R22 | 33.7" | 855 mm | 22 mm |
| 295/55R22 | 34.8" | 883 mm | 22 mm |
| 295/60R20 | 33.9" | 862 mm | 20 mm |
| 295/65R20 | 35.1" | 892 mm | 20 mm |
| 295/70R17 | 33.3" | 846 mm | 17 mm |
| 295/70R18 | 34.3" | 871 mm | 18 mm |
| 295/75R16 | 33.4" | 848 mm | 16 mm |
| 295/75R17 | 34.4" | 874 mm | 17 mm |
| 305/35R26 | 34.4" | 874 mm | 26 mm |
| 305/40R24 | 33.6" | 854 mm | 24 mm |
| 305/45R24 | 34.8" | 884 mm | 24 mm |
| 305/50R22 | 34.1" | 865 mm | 22 mm |
| 305/55R22 | 35.2" | 895 mm | 22 mm |
| 305/60R20 | 34.4" | 874 mm | 20 mm |
| 305/65R18 | 33.6" | 853 mm | 18 mm |
| 305/70R17 | 33.9" | 860 mm | 17 mm |
| 305/70R18 | 34.8" | 885 mm | 18 mm |
| 305/75R16 | 34" | 864 mm | 16 mm |
| 315/20R30 | 35" | 888 mm | 30 mm |
| 315/40R25 | 34.9" | 887 mm | 25 mm |
| 315/45R24 | 35.2" | 894 mm | 24 mm |
| 315/50R22 | 34.4" | 875 mm | 22 mm |
| 315/60R20 | 34.9" | 886 mm | 20 mm |
| 315/70R16 | 33.4" | 848 mm | 16 mm |
| 315/70R17 | 34.4" | 874 mm | 17 mm |
| 315/75R16 | 34.6" | 878 mm | 16 mm |
| 325/45R22 | 33.5" | 851 mm | 22 mm |
| 325/50R22 | 34.8" | 885 mm | 22 mm |
| 325/60R18 | 33.3" | 847 mm | 18 mm |
| 325/65R18 | 34.6" | 879 mm | 18 mm |
| 325/70R17 | 35" | 888 mm | 17 mm |
| 335/35R26 | 35.2" | 894 mm | 26 mm |
| 335/40R24 | 34.6" | 878 mm | 24 mm |
| 335/55R20 | 34.5" | 876 mm | 20 mm |
| 335/70R16 | 34.5" | 876 mm | 16 mm |
| 345/60R18 | 34.3" | 871 mm | 18 mm |
| 355/40R24 | 35.2" | 894 mm | 24 mm |
| 355/50R20 | 34" | 864 mm | 20 mm |
| 375/45R20 | 33.3" | 846 mm | 20 mm |
| 375/45R22 | 35.3" | 897 mm | 22 mm |
| 375/65R16 | 35.2" | 894 mm | 16 mm |
| 385/35R24 | 34.6" | 880 mm | 24 mm |