235/60R18 Tire Size in Inches and Millimeters

235/60R18 tires have a diameter of 29.1" (739 mm), a tread width of 9.3" (235 mm), and a wheel diameter of 18" (457.2 mm).The sidewall of the tire is 5.6" (141 mm), and the tire's circumference is 91.4" (2320.5 mm). This means a 235/60R18 tire will make make 693 revolutions per mile, or 431 revolutions per kilometer.

235/60R18 Tire Front
9.3"
29.1"
235/60R18 Tire Side
Tire Circumference
91.4"
18"
5.6"
693 Revs/Mile
SpecInchesMetric
Diameter29.1"739 mm
Width9.3"235 mm
Wheel18"457.2 mm
Sidewall5.6"141 mm
Circum91.4"2320.5 mm
Revolutions693 per mile431 per km

What Does 235/60R18 Mean?

The tire size 235/60R18 is a common size used on many trucks, SUVs, and other larger vehicles.

Here is what each part of the size designation represents:

  • 235: This number represents the width of the tire in millimeters. In this case, the tire is 235 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.

235/60R18 tire size meaning

How To Convert 235/60R18 Into Inches

The 235/60R18 conversion is fairly simple. The first number in the tire size, 235, represents the width of the tire in millimeters. To convert this to inches, we divide 235 by 25.4 (since there are 25.4 millimeters in an inch). This gives us approximately 9.3 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 9.3 by 0.60, which gives us approximately 5.6 inches.

Finally, the last number in the tire size, 18, represents the diameter of the wheel rim in inches. Therefore, the tire size 235/60R18 can be expressed in inches as roughly 9.3 inches wide, 5.6 inches tall, and designed to fit a 18-inch wheel rim.

Frequently Asked Questions About 235/60R18 Tires

How tall is a 235/60R18 tire?

A 235/60R18 tire has an approximate height, also known as the overall diameter, of 29.1 inches (739 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 235/60R18 tire?

A 235/60R18 tire has a width of approximately 9.3 inches (235 millimeters). The width of the tire is the first number in the tire size designation, which in this case is “235”. 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 235/60R18 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.

SizeDiameterWidthWheel
145/80R2029.1"740 mm20 mm
155/80R1928.8"731 mm19 mm
155/85R1828.4"721 mm18 mm
155/90R1829"737 mm18 mm
165/90R1728.7"730 mm17 mm
165/90R1829.7"755 mm18 mm
175/80R1829"737 mm18 mm
175/90R1729.4"748 mm17 mm
195/80R1628.3"718 mm16 mm
205/80R1628.9"734 mm16 mm
205/90R1529.6"751 mm15 mm
215/70R1728.9"734 mm17 mm
215/75R1628.7"728 mm16 mm
215/80R1528.5"725 mm15 mm
215/80R1629.5"750 mm16 mm
215/85R1529.4"747 mm15 mm
225/55R1928.8"731 mm19 mm
225/60R1828.6"727 mm18 mm
225/65R1728.5"724 mm17 mm
225/65R1829.5"749 mm18 mm
225/70R1628.4"722 mm16 mm
225/70R1729.4"748 mm17 mm
225/75R1528.3"719 mm15 mm
225/75R1629.3"744 mm16 mm
225/80R1529.2"741 mm15 mm
235/45R2028.3"720 mm20 mm
235/45R2129.3"745 mm21 mm
235/50R1928.3"719 mm19 mm
235/50R2029.3"744 mm20 mm
235/55R1929.2"741 mm19 mm
235/60R1829.1"739 mm18 mm
235/65R1729.1"738 mm17 mm
235/70R1629"736 mm16 mm
235/75R1528.9"733 mm15 mm
235/75R1629.8"758 mm16 mm
235/80R1529.8"757 mm15 mm
245/25R2428.8"732 mm24 mm
245/30R2429.8"758 mm24 mm
245/35R2228.8"731 mm22 mm
245/40R2128.7"729 mm21 mm
245/45R2028.7"728 mm20 mm
245/45R2129.6"753 mm21 mm
245/50R1928.7"729 mm19 mm
245/50R2029.7"754 mm20 mm
245/55R1828.6"727 mm18 mm
245/55R1929.6"753 mm19 mm
245/60R1728.6"726 mm17 mm
245/60R1829.6"751 mm18 mm
245/65R1729.5"750 mm17 mm
245/70R1528.5"725 mm15 mm
245/70R1629.5"750 mm16 mm
245/75R1529.5"749 mm15 mm
247/70R1629.6"752 mm16 mm
255/25R2429.1"738 mm24 mm
255/35R2229"737 mm22 mm
255/40R2129"737 mm21 mm
255/45R2029.1"738 mm20 mm
255/50R1929.1"739 mm19 mm
255/55R1829"737 mm18 mm
255/60R1729.1"738 mm17 mm
255/65R1629.1"738 mm16 mm
255/70R1529.1"739 mm15 mm
265/25R2429.2"742 mm24 mm
265/30R2228.3"719 mm22 mm
265/35R2128.3"719 mm21 mm
265/35R2229.3"745 mm22 mm
265/40R2028.3"720 mm20 mm
265/40R2129.3"745 mm21 mm
265/45R1928.4"721 mm19 mm
265/45R2029.4"746 mm20 mm
265/50R1828.5"723 mm18 mm
265/50R1929.5"749 mm19 mm
265/55R1728.5"724 mm17 mm
265/55R1829.5"749 mm18 mm
265/60R1628.5"724 mm16 mm
265/60R1729.5"750 mm17 mm
265/65R1629.5"750 mm16 mm
265/70R1529.6"753 mm15 mm
275/23R2429"736 mm24 mm
275/25R2429.4"748 mm24 mm
275/30R2228.5"725 mm22 mm
275/35R2128.5"725 mm21 mm
275/35R2229.6"751 mm22 mm
275/40R2028.7"728 mm20 mm
275/40R2129.6"753 mm21 mm
275/45R1928.8"731 mm19 mm
275/45R2029.8"756 mm20 mm
275/50R1828.9"733 mm18 mm
275/50R1929.9"759 mm19 mm
275/55R1728.9"734 mm17 mm
275/55R1829.9"759 mm18 mm
275/60R1629"736 mm16 mm
285/30R2228.8"731 mm22 mm
285/35R2128.9"733 mm21 mm
285/35R2229.9"759 mm22 mm
285/40R2029"736 mm20 mm
285/40R2130"761 mm21 mm
285/45R1929.1"739 mm19 mm
285/50R1829.3"743 mm18 mm
285/60R1629.4"748 mm16 mm
295/23R2429.4"746 mm24 mm
295/30R2229"737 mm22 mm
295/35R2129.1"739 mm21 mm
295/40R1928.3"719 mm19 mm
295/40R2029.3"744 mm20 mm
295/45R1828.5"723 mm18 mm
295/45R1929.5"749 mm19 mm
295/60R1528.9"735 mm15 mm
305/25R2329"736 mm23 mm
305/30R2128.2"717 mm21 mm
305/30R2229.3"743 mm22 mm
305/35R2028.4"722 mm20 mm
305/35R2129.4"747 mm21 mm
305/40R2029.6"752 mm20 mm
305/45R1828.8"731 mm18 mm
315/25R2228.2"717 mm22 mm
315/25R2329.2"742 mm23 mm
315/30R2128.5"723 mm21 mm
315/30R2229.5"749 mm22 mm
315/35R2028.7"728 mm20 mm
315/35R2129.6"753 mm21 mm
315/40R1928.9"735 mm19 mm
315/55R1629.6"752 mm16 mm
315/60R1529.9"759 mm15 mm
325/30R2128.7"729 mm21 mm
325/35R2029"736 mm20 mm
325/45R1829.5"749 mm18 mm
335/25R2228.6"727 mm22 mm
345/35R1928.5"725 mm19 mm
345/55R1530"761 mm15 mm