What does 245/45R20 mean?
|
245 |
The tire width is 245mm. |
|
45 |
The aspect ratio of the tire is 45. Aspect ratio is the relative height of tire sidewall. The number refers to the percentage of sidewall height in relation to tire width. |
|
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. |
|
20 |
Rim diameter for the tire. |
245/45R20 99W tire size
The width of 245/45R20 99W tire is stated in millimeters and sidewall height in percentages. In this table you’ll find out the 245/45R20 99W tire size in inches as well as few additional metrics:
|
|
In inches | In millimeters |
|
Section Width |
9.6″ | 245mm |
|
Sidewall height |
4.3″ | 110mm |
|
Diameter / Height |
28.7″ | 729mm |
|
Circumference |
90.1″ | 2289mm |
|
Rim Diameter |
20″ | |
|
Revolutions |
703 per mile | 437 per kilometer |
Rim Size for 245/45R20 99W Tires
Recommended rim sizes for 245/45R20 99W tire:
| Diameter | Width Range |
| 20″ | 7.5-9″ |
What does 99W mean?
The load index 99 means that the tire has been designed to support 1709 lbs or 775 kg.
The speed index W means that the tire has been designed to be used in speed up to 168 mph or 270 kph.
This size tire is usually used on a passenger car.