A valid digital signature gives a recipient reason to believe that the message was created by a known sender (authentication), that the sender cannot deny having sent the message (non-repudiation), and that the message was not altered in transit (integrity).
Load index is an assigned number that corresponds with the load-carrying capacity of a tire. Most passenger car tire load indexes range from 75 to 100, but a few carry more. You'll also find the maximum load elsewhere on the tire sidewall, both in lbs and kg.
Load & Speed. The symbol that shows a tire's performance level consists of two parts:Tire performance is marked by Load Index (LI) and Speed Symbol (SS). LI refers to the maximum load that one tire can support, and SS refers to the maximum speed that a tire can handle. Load index is a numerical code stipulating the maximum load each tire can carry. For example, if the load index is 100, it means that a tire can carry a load up to 800kg.