245/40R19 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:
|245||The tire width is 245mm.|
|40||The aspect ratio of the tire is 40. 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.
|19||Rim diameter for the tire. 245/40R19 tire can be mounted only to a 19″ rims.|
Best selling 245/40R19 tires
What is 245/40R19 tire size in inches?
Because the width of 245/40R19 tire is stated in millimeters and sidewall height in percentages, you have to make calculations to see what the true size of 245/40R19 is in inches. Luckily, we have made these calculations for you.In this table you can see size of 245/40R19 in inches, as well as few additional metrics:
|In inches||In millimeters|
|Diameter / Height||26.7″||679mm|
|Revolutions||755 per mile||469 per kilometer|
Recommended Rim Sizes for 245/40R19 Tires
For 245/40R19 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 245/40R19 to a too wide or too narrow rim. Here are the recommended rim sizes for 245/40R19 tire:
245/40R19 – Variations
When you look at the tire code on 245/40R19 tires, you may see there are additional numbers and letters after the code 245/40R19. These numbers and letters refer to speed rating and load index of the tire. 245/40R19 has at least following variations available on the markets:245/40R19 94H 245/40R19 94T 245/40R19 94V 245/40R19 94W 245/40R19 94Y 245/40R19 98H 245/40R19 98T 245/40R19 98V 245/40R19 98W 245/40R19 98Y