Just What Do the Letters and Numbers on Your Nitto Terra Grappler Tires Mean?

When you admire your new Nitto Terra Grappler tires, you will notice a series of words and lettering on the sidewall. This isn’t just information to be ignored, the information is useful and you should be aware of what it all means. Each of your tires has useful information molded tight there into its sidewall, you will find the brand, size inflation pressure and a number of grades.

The first character in the tire size show the tire class. For example, the letter “P” represents a passenger tire, and “LT” represents a light truck and so forth.

Metric tires are measured in millimeters, which is taken from sidewall to sidewall. This is shown as the first three numbers after the tire class letter. The next two numbers shows us the aspect ratio, which refers to the height of the sidewall. It is based on the percentage of the section width.

The following letter refers to the construction of the tire. For example, an “R” indicates the tire is radial in construction. The last two numbers give you the diameter in inches.

The load index is the maximum amount of weight a tire can carry safely. The load index ranges from 0 to 279, which corresponds with the capacity of the tire. View a load index chart for further information and other important details.

Hang tight, we have just begun. There is a lot of information on your tires that is useful, and we just gave you a few examples. Check back soon for further information about what the lettering and numbers on your tires mean.