Maxxis Bicycle Tire Terminology and AcronymsConfused by a Maxxis tire technology term or acronym? This list is for you!
Tubeless Ready - TR
L.U.S.T.Maxxis mountain tubeless tires, certified to UST® standards, featuring Lightweight Ultimate Sidewall Technology (L.U.S.T.). This technology offers better puncture resistance, improved air retention, better longevity and lower weight than previous tubeless technologies. By adding a thin fabric layer to the sidewall, covered in a special airtight rubber compound, Maxxis created a casing that is lighter, tougher and holds air better.
EXO ProtectionAn extremely cut-resistant and abrasion-resistant material added to the sidewalls of select mountain tires. This densely woven fabric is also lightweight and highly flexible, ensuring that the performance of the tire remains unaffected. Choose EXO Protection for exceptionally rocky, treacherous trails where the chance of sidewall cuts and abrasions is high.
Double Down - DD
Single-Ply CasingOne layer of nylon wrapped from bead to bead. A single-ply casing conforms well to the terrain and is lighter weight.
Downhill (DH) CasingTwo layers of casing material are used from bead to bead, providing additional protection and sidewall stiffness for downhill applications.
Threads Per Inch (TPI)
Wire BeadThe function of the bead is to keep the tire in contact with the rim while the tire is inflated. A rigid metal wire is utilized as bead material in applications where ultimate strength is needed and transportability is not a factor.
Folding BeadFoldable beads also keep the tire secured to the rim but are lighter weight and easily transported. The bead is made of spun aramid or Kevlar® fibers.
Carbon Fiber BeadA flexible material with greater strength to withstand the forces exerted by a high-pressure road tire.
Kevlar Composite - K2
CompoundsThe most important part of a tire is arguably the rubber compound within the tread. By changing the amounts of various components of the rubber formula, engineers can make two identical looking tires perform completely differently. A list of the Maxxis compounds and their distinct characteristics is below.
Single Compound (SC)One compound throughout the tread optimized for longevity and performance.
Dual Compound (DC)Two compounds used within the tread of select tires to offer lower rolling resistance and increased cornering grip.
3C Triple Compound Road
Maxx Speed Compound
60aThe MaxxPro 60a compound is great 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 100% perfectly dispersed carbon black. 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 more slowly after shaping itself to the terrain. MaxxPro is one of the many technological advantages brought about by our more than thirty years of producing bicycle tires.
eXCeption SeriesThe eXCeption Series of tires is a combination of the Maxxis 62a compound and 120 TPI casing. This not only makes for a lighter model tire: it also enhances cornering, braking, and acceleration. These tires are recommended for race use only.
Slow ReezaySlow Reezay is a compound with a durometer rating of 40a. This means that it is a very soft compound. It is used exclusively in the Maxxis downhill line. Due to its slow rebounding properties, this compound allows for traction and speed to be maintained in highly technical terrain. These tires are used in racing.
Durometer RatingA Durometer is both an instrument and the international standard for measuring the hardness of rubber. A Durometer works by measuring the penetration of the gauge’s indentor under the specific conditions of a given Durometer standard. Shore“A” Durometer is used for flexible materials. Durometers are described in the American Society for Testing and Material specification ASTM D2240; this is the recognized specification for the instrument and test procedures.
Measuring the Durometer of a rubber compound is one simple way to differentiate between two compounds. The Maxxis eXCeption line of tires at 62a Durometer is more rigid than Maxxis Super Tacky(ST), which is 42a. This difference can also be felt by hand when applying pressure to a tire’s tread. Durometer hardness is only one of many compound properties. It can provide a general guideline on compound performance, but cannot be an accurate indicator of tire compound performance. For example, the harder compound will typically have better tread wear and rolling efficiency, while the softer compound will provide maximum traction. However, other properties such as rebound and tear resistance are also important. Furthermore, tread compound is only part of the tire’s equation. Tire compound, chemical composition, tread pattern, casing design, and tire wear are all factors that affect the performance of your tires. Different areas such as grip, durability, and rolling efficiency are optimized in each Maxxis compound. Consider all the variables when selecting one of Maxxis’ tires.