Consumer Reports deciphers the cryptic sidewall codes on a typical tire, explaining how to decode tire size, load index, maximum pressure, speed rating, and more.

One part of the string of information on the side of your car's tires is the load index, ... with a load rating of 94. Looking at this chart, 94 is 1,477 pounds. Multiplied by four, that's a total ...

If the tire pressure is reduced to 40 psi, the individual tire-load rating drops to 1,190 pounds (2,380 pounds combined), or 110 pounds less than the trailer capacity. If you are in the habit of ...

Load index is another way of displaying a tire’s load-carrying capacity. The load index value for most truck tires will fall between 109 and 130 (2,271 pounds to 4,190 pounds, respectively).