2022 Infiniti QX55 Tire Size

The original tire size for your 2022 Infiniti QX55 is listed below. Tap on the box to view a color-coded explanation of the best Infiniti QX55 tire size.

Trim Options:

EssentialLuxeSensory

255/45RF20 101V

Simplified Size:  255-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2022 Infiniti QX55 is 255/45RF20 101V.  A color-coded explanation of the 2022 Infiniti QX55's tire size is shown below.

255

This number indicates that your tire has a width of 255 millimeters.

20

The tire size was designed to fit rims or wheels that are 20 inches in diameter.

RF

The mark of RF indicates that the tire is reinforced.  This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load.

101

This tire has a load index of 101, which means it's capable of carrying a load of 1815 pounds (825 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

45

This number means that your tire has an aspect ratio of 45%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width.  In this case, the sidewall height works out to be 114 millimeters.

V

This tire has a speed rating of V, which means 149 mph (240 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.