215/45R17 refers to the size of the tire. It’s a standard which is used by car and tire manufacturers. By having the standard, tire manufacturers are able to manufacture same size tires independently and users can buy same size tires from different manufacturers.
Here’s an explanation of what these metrics mean in practice:
| 215 | The tire width is 215mm. |
| 45 | The aspect ratio of the tire is 45. Aspect ratio refers to the height of tire sidewall in relation to tire width in percentages. |
| R | The letter in the middle refers to tire construction. Practically all tires sold for cars are radials. Sometimes you also see tires with RF or ZR. RF indicates the tire is run flat, whereas ZR means the tire has speed rating higher than V. These tires are also radials, as the R indicates. |
| 17 | Rim diameter for the tire. 215/45R17 tire can be mounted only to a 17″ rims. |
Best selling 215/45R17 tires
Fullway HP108 All-Season Passenger Car High Performance Radial Tire-215/45R17 215/45ZR17 215/45/17 215/45-17 91W Load Range XL 4-Ply BSW Black Side Wall UTQG 380AA
15% Off(as of December 4, 2023 12:11 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Set of 2 (TWO) Fullway HP108 All-Season Passenger Car High Performance Radial Tires-215/45R17 215/45ZR17 215/45/17 215/45-17 91W Load Range XL 4-Ply BSW Black Side Wall UTQG 380AA
(as of December 4, 2023 12:11 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Summit Ultramax HP All-Season Tire - 215/45R17 91W
(as of December 4, 2023 12:11 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
What is 215/45R17 tire size in inches?
Because the width of 215/45R17 tire is stated in millimeters and sidewall height in percentages, you have to make calculations to see what the true size of 215/45R17 is in inches. Luckily, we have made these calculations for you.In this table you can see size of 215/45R17 in inches, as well as few additional metrics:
| In inches | In millimeters | |
| Section Width | 8.5″ | 215mm |
| Sidewall height | 3.8″ | 97mm |
| Diameter / Height | 24.6″ | 625mm |
| Circumference | 77.3″ | 1964mm |
| Rim Diameter | 17″ | |
| Revolutions | 819 per mile | 509 per kilometer |
Recommended Rim Sizes for 215/45R17 Tires
For 215/45R17 tires you need to have correct size rims to install the tires to. There are different width rims available in the market, and you can run into problems by installing 215/45R17 to a too wide or too narrow rim. Here are the recommended rim sizes for 215/45R17 tire:
| Diameter | Width Range |
| 17″ | 7-8″ |
215/45R17 – Variations
When you look at the tire code on 215/45R17 tires, you may see there are additional numbers and letters after the code 215/45R17. These numbers and letters refer to speed rating and load index of the tire. 215/45R17 has at least following variations available on the markets:
215/45R17 87H 215/45R17 87T 215/45R17 87V 215/45R17 87W 215/45R17 91H 215/45R17 91S 215/45R17 91T 215/45R17 91V 215/45R17 91W 215/45R17 91Y