195/55 R20 tires' overall diameter is 28.4 inches, tire width is 7.7 inches, the tire can be mounted on 20 inches wheel and the circumference is 89.2". With that parameters, we can calculate that it will take approximately 710.3 revolutions per mile.
So the closest metric tire size of 195/55R20 existing size in inches is 33x11.50R20, which is 16.2% taller and 49.35% wider.
You can use our handy tire size calculator to compare 195/55 R20 vs 33x11.50R20.
For each tire size there often there are several wheel sizes. You can't put too wide tires on narrow rims or vice versa. Here is what size of the wheels your vehicle needs for 195/55 R20 tires:
Rim diameter x rim width
| Parameter | Meaning |
|---|---|
| 195 | The first number shows that the tire has a section width of 195 mm or approximately 7.7 inches. |
| 55 | The second number is the aspect ratio or sidewall height. In this case, it is 55%. It shows the height of the tire from the ground to the rim edge or the height of the tire's cross-section which is 55% of the width or ~ 108mm |
| R20 | The letter R means this tire is radial. Most of all tires nowadays are radial. The number is the tire diameter in inches. It means that the tire will fit 20-inch wheels |
If you want to know more about how to decipher information inscribed on your tires, including aspects such as the tire height, tire width, and the diameter of the wheel, this guide provides an in-depth look at how to read a tire sidewall. These measurements can reveal a wealth of information about your tire's specifications and suitability for your vehicle. Mastering these details will allow you to make informed decisions when buying or replacing your tires.