235/40R19 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:
| 235 | The tire width is 235mm. |
| 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. 235/40R19 tire can be mounted only to a 19″ rims. |
Best selling 235/40R19 tires
235/40R19 Atlas Tire Force UHP 96Y, XL All Season High Performance 520AAA
(as of December 11, 2023 16:31 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.)
MICHELIN Primacy MXM4, All-Season Car Tire, SUV, Sport and Passenger Cars - 235/40R19/XL 96V
20% Off(as of December 11, 2023 16:31 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 4 (FOUR) Landspider Citytraxx H/P All-Season Passenger Car High Performance Radial Tires-235/40R19 235/40ZR19 235/40/19 235/40-19 96W Load Range XL 4-Ply BSW Black Side Wall UTQG 420AA
(as of December 11, 2023 16:31 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 235/40R19 tire size in inches?
Because the width of 235/40R19 tire is stated in millimeters and sidewall height in percentages, you have to make calculations to see what the true size of 235/40R19 is in inches. Luckily, we have made these calculations for you.In this table you can see size of 235/40R19 in inches, as well as few additional metrics:
| In inches | In millimeters | |
| Section Width | 9.3″ | 235mm |
| Sidewall height | 3.7″ | 94mm |
| Diameter / Height | 26.4″ | 671mm |
| Circumference | 82.9″ | 2107mm |
| Rim Diameter | 19″ | |
| Revolutions | 764 per mile | 475 per kilometer |
Recommended Rim Sizes for 235/40R19 Tires
For 235/40R19 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 235/40R19 to a too wide or too narrow rim. Here are the recommended rim sizes for 235/40R19 tire:
| Diameter | Width Range |
| 19″ | 8-9.5″ |
235/40R19 – Variations
When you look at the tire code on 235/40R19 tires, you may see there are additional numbers and letters after the code 235/40R19. These numbers and letters refer to speed rating and load index of the tire. 235/40R19 has at least following variations available on the markets:
235/40R19 92H 235/40R19 92V 235/40R19 92W 235/40R19 92Y 235/40R19 96H 235/40R19 96T 235/40R19 96V 235/40R19 96W 235/40R19 96Y