For your tires to function properly, it’s important to select the correct load index. You can locate your tire’s load index on the tire sidewall. It often appears as a two-digit number paired with a letter at the end of the tire size. (The letter is your tire’s speed rating.)
Tire load index is an assigned number that corresponds to the maximum weight that a tire can support when properly inflated.
The higher the tire’s load index number, the greater its load carrying capacity.
Choosing a tire with a lower load index than the original equipment specifications means that the tire will not carry the load capacity of the original.