Metzeler Racetec RR K3 DOT Compound Tire

Developed to win road races, RACETEC™ RR delivers maximum performance

Grip in All Conditions

Road racing courses feature multiple and variable conditions, and RACETEC™ RR compound sepcifications have been developed to cope with all of them

The compound recipes of RACETEC™ RR blend a selection of polymers and resins with different grades of carbon black to maximise hysteresis - even on slippery surfaces

RACETEC™ RR fronts conform to the  micro-granularity of tarmac delivering more grip and wear resistance, to last longer on severe asphalt; the blend of polymers features also high flexibility at lower temperatures

The dial-compound cap and base scheme of RACETEC™ RR rears feature a highly conductive center strip, which supports the shoulder compound from underneath and warms it up during long straights by redistributing the heat generated to the shoulders, maintaining them in the operatve temperature and ensuring grip when going into lean

Precision and Stability at High Speed

RACETEC™ RR features a composite structure, differentiated between the crown and the sides of the carcass to react properly to different circumstances

Stability is critical in road racing when riding on long straights at full speed (because of aerodynami interferences) and when the bike passes over drain covers, repair patches, or jumps

In both cases stability may be emporarily lost in the rebound following the bike's quick lift and drop back down to the asphalt, compressing both tires and shock absorbers

The crown structure is made with special rayon fiber This is characterised by a high rate of linear density and stiffness and is capable of maintaining its shape under high stress and load strain

The fiber further assists to dampen the rebound stroke which absorbs the shock by distributing it through the whole carcass, and dampens the rebound while getting back to the initial shape

The side structure is designed to be stiff, with a low deformation ratio, so to sustain the entire architecture under stress, and to guarantee trajectory and precision both on long fast, and full lean

Duration and Performance Consistency

Road race sessions can last up to 240 km (150 miles), which is more than three times and average track race;  durability, integrity and performance consistency are keys to win

All the compounds of RACETEC™ RR range feature high resistance to abrasion thanks to a homogenous dispersion of the compnents in the polymeric matrix obtained through our exclusive and patented continuous mixing process

The tread groove layout minimises the wear and also to disrupt the forces which crease the compound, known as Schallamach's wear waves

The disruptive angle of RACETEC™ RR grooves are the result of advanced analyses based on road racing activity