165/70R18 in Inches

A 165/70R18 tire has a 27.1-inch diameter, a 6.5-inch width, and is designed for a 18-inch rim.

In high flotation terms, this tire is labeled as 27.1x6.5R18.

165/70R18 Tire Size
6.5"
27.1"
165/70R18 Tire Size in Inches
165/70R18 Tire Circumference
85.1"
18"
4.5"
744.4 revs/mile

165/70R18 Tire Overview

Height
27.1 inches
Wheel Diameter
18 inches
Tire Width
6.5 inches
Circumference
85.1 inches
Sidewall Height
4.5 inches
Revolutions
744.4 per mile
Tirelib.com

What does 165/70R18 mean?

165/70R18 tire size meaning in inches

165/70R18 is a tire size with the following dimensions:

  • 165 is the width of the tire in millimeters. This number also indicates the appropriate width of the rim on which the tire should be mounted.
  • 70 is the aspect ratio, which is the ratio of the tire's height to its width. This affects the tire's handling and ride comfort
  • R indicates the tire's construction type, meaning it has a radial construction. This provides stability and precision to the tire.
  • 18 is the diameter of the wheel in inches, on which the tire is to be mounted.

165/70R18 Tire Conversion

DimensionsInchesMillimeters
Tire Diameter27.1 in688.2 mm
Section Width6.5 in165 mm
Rim Height18 in457 mm
Sidewall Height4.5 in115.5 mm
Circumference85.1 in2162 mm
Revolutions744.4 revs/mile
Not the tire size you are searching for? Try our Tire Size Calculator.

FAQ About 165/70R18 Tire

How tall is a 165/70R18 tire?

The height (or diameter) of a 165/70R18 tire is 27.1 inches

How wide is a 165/70R18 tire?

The width of a 165/70R18 tire is 165 mm, which is about 6.5 inches.

What size rim fits a 165/70R18 tire?

A 165/70R18 tire fits on a rim that is 18 inches in diameter.

What does the 70 in a 165/70R18 tire mean?

The 70 in a 165/70R18 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 70% of its width.

Alternative Tire Sizes for 165/70R18

Typically, it's recommended to choose a tire with a diameter (height) within 3% of the original equipment manufacturer (OEM) tire size.

However, keep in mind that this is a general guideline and not an absolute rule.

Here are some tire sizes that are compatible with the 165/70R18:

Tire SizeDiameterRim
145/80R1827.1″ (Equal)18 x n/a
135/80R1826.5″ (-2.2%)18 x n/a
145/85R1827.7″ (2.2%)18 x n/a
155/70R1826.5″ (-2.2%)18 x n/a
155/80R1827.8″ (2.6%)18 x n/a
205/55R1826.9″ (-0.7%)18 x 5.5-7.5
205/60R1827.7″ (2.2%)18 x 5.0-7.5
215/50R1826.5″ (-2.2%)18 x 6.0-7.5
215/55R1827.3″ (0.7%)18 x 6.0-7.5
225/50R1826.9″ (-0.7%)18 x 6.0-8.0
225/55R1827.7″ (2.2%)18 x 6.0-8.0
235/45R1826.3″ (-3.0%)18 x 7.5-9.0
235/50R1827.3″ (0.7%)18 x 6.5-8.5
245/45R1826.7″ (-1.5%)18 x 7.5-9.0
245/50R1827.6″ (1.8%)18 x 7.0-8.5
255/45R1827.0″ (-0.4%)18 x 8.0-9.5
265/40R1826.3″ (-3.0%)18 x 9.0-10.5
265/45R1827.4″ (1.1%)18 x 8.5-10.0
275/40R1826.7″ (-1.5%)18 x 9.0-11.0
275/45R1827.7″ (2.2%)18 x 8.5-10.5
285/40R1827.0″ (-0.4%)18 x 9.5-11.0
295/40R1827.3″ (0.7%)18 x 10.0-11.5
305/35R1826.4″ (-2.6%)18 x 10.0-12.0
305/40R1827.6″ (1.8%)18 x 10.0-12.0
315/35R1826.7″ (-1.5%)18 x 10.5-12.5
315/40R1827.9″ (3.0%)18 x 10.5-12.5
325/35R1827.0″ (-0.4%)18 x 11.0-13.0
335/35R1827.2″ (0.4%)18 x n/a
345/35R1827.5″ (1.5%)18 x 11.5-13.5