What gives a tire an all season rating?

What gives a tire an all season rating?
The basic structure of tires can be varied in innumerable ways. The stiffness relationship between the sidewalls and the tread varies, the design, the reinforcements and the rubber compounds of the tire shoulders are subject to a lot of experimentation when tire manufacturers are struggling to provide more grip on the very edge of a tires performance limits. The number of plies and the shape of the tires vary with load ratings and comfort levels. In addition to all the secrets hidden inside the tires, there is also the very complicated science of optimizing the tread patterns for different vehicles and driving conditions. The complications of tire manufacturing also make it complicated to choose the tire that is absolutely the best one for you and your vehicle. Choosing a good tire is not that difficult as the tough competition in the tire market makes sure that bad tires disappear very quickly. Qualified dealers and quality and price conscious consumers have driven manufacturers to produce tires of a quality that only could be imagined only a few years back.Today's tires are almost unbelievably strong. A few decades ago, punctures were commonplace. Now punctures are as rare as they were common before. If tires are changed according to manufacturer recommendations, a tire puncture is extremely unlikely.