What does 165/40R17 mean?
165/40R17 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.
- 40 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.
- 17 is the diameter of the wheel in inches, on which the tire is to be mounted.
165/40R17 Tire Conversion
| Dimensions | Inches | Millimeters |
| Tire Diameter | 22.2 in | 563.8 mm |
| Section Width | 6.5 in | 165 mm |
| Rim Height | 17 in | 431 mm |
| Sidewall Height | 2.6 in | 66 mm |
| Circumference | 69.7 in | 1771.2 mm |
| Revolutions | 908.6 revs/mile | |
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FAQ About 165/40R17 Tire
How tall is a 165/40R17 tire?
The height (or diameter) of a 165/40R17 tire is 22.2 inches
How wide is a 165/40R17 tire?
The width of a 165/40R17 tire is 165 mm, which is about 6.5 inches.
What size rim fits a 165/40R17 tire?
A 165/40R17 tire fits on a rim that is 17 inches in diameter.
What does the 40 in a 165/40R17 tire mean?
The 40 in a 165/40R17 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 40% of its width.
Alternative Tire Sizes for 165/40R17
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 165/40R17:
| Tire Size | Diameter | Rim |
|---|---|---|
| 165/45R17 | 22.8″ (2.7%) | 17 x n/a |
| 185/35R17 | 22.1″ (-0.5%) | 17 x n/a |