What are Maxxpro 50a and 60a Compounds?
The limited production MaxxPro compound is available in two different Durometer measurements for varying terrains and weather conditions. Only Maxxis has exclusive use of the Exxpro polymer, created by Exxon. Our engineers have blended Exxpro with our own Maxxpro elastomer, which allows soft tires to have a long tread life without compromising the increase in traction that soft compounds provide.
All MaxxPro tires benefit from carbon black that is perfectly dispersed at 100%. Maxxis’ technology allows for the carbon black molecules to be ground smaller and thus more closely arranged than carbon black found in other manufacturer’s compounds. The result is a smoother tire surface that wears longer than traditional compounds. Maxxis’ perfect dispersion of carbon black also minimizes cut growth, in instances where the tread becomes torn or cut. The tire also rolls faster as a result of the rubber recovering slower after shaping itself to the terrain. Maxxpro is one of the many technological advantages of our more than thirty years producing bicycle tires.
Источник:
http://www.maxxis.com/bike/faq.asp
Если я понял правильно, чем больше цифра, тем тверже резина.
