Continental Grand Prix 5000 700c Tubeless Road Tire - Black Although the Continental Grand Prix 5000 is still one of the fastest and most popular racing bike tires, it didn't stop the developers of the German manufacturer from launching a tubeless-ready (TR) version that has been improved in all areas. At first glance, the 5000 TR can hardly be distinguished from the previous version. However, the familiar Lazer Grip profile structure conceals a completely newly developed structure. In contrast to the previous version, the 5000 TR only has 2 instead of 3 layers of fabric under the tread. This ensures a better adaptation to the ground and contributes significantly to the reduction in rolling resistance of 20%. Thanks to the Vectran Breaker puncture protection layer and the grippy Black Chili tread adopted from the previous version, the reduced number of layers does not have a negative effect on the puncture protection. The side walls still consist of 3 layers with a newly added protective layer. This not only improves the puncture protection of the sidewalls by 28%, it also ensures that the tire runs more stable at low air pressures. A new, patented tube -less construction that works without a sealing rubber layer makes the tire 50 grams lighter than the previous version. Long awaited by many Conti fans, the new 5000 TR is now also compatible with hookless rims. But it can continue with the classic clincher rims and also with tube be driven. The new tubeless tire has already proven its outstanding properties and versatility in racing. Both the world title in the individual time trial and the victory at Paris-Roubaix could be achieved on the 5000 TR. Handmade in Germany Over 100 years of experience in the development and production of bicycle tires make Continental a unique company in the industry. Continental is also the only German bicycle tire manufacturer with production in Germany! Conti tires are hand-built in Germany using unique technologies and materials. BlackChili Compound At Conti, BlackChili means above all that grip, rolling resistance and durability are combined at a level that you can almost believe in magic. In doing so, Continental simply uses the very latest and best technologies. The latest polymers, soot particles and fillers optimized down to the nano range guarantee the unique performance of the BlackChili compound. It revolutionized the basic conflict between grip and rolling resistance. About 30% more grip and a 26% better rolling resistance compared to the silica compound, ensure more performance and safety. Continental tires consist entirely of this high-quality rubber compound. This means that the tires can be driven down to the carcass without losing the first-class properties of the rubber! Anyone who has ever driven a tire with Black Chilli doesn't want anything else! Vectran breaker Vectran is a synthetically produced high-tech fiber based on a natural model. Like spider silk, Vectran is a liquid crystalline polymer (LCP). Vectran is spun from the molten liquid polymer Vectra and processed into a multi-fiber yarn. Spider silk as well as Vectran are extremely tear-resistant and extremely lightweight. The advantages of the Vectran-Breaker are greater puncture resistance and lower weight. Vectran is more cut-resistant than aramid, 5 times more tensile than steel and lighter than nylon thread, without affecting the rolling resistance. Thus it offers the ideal protective layer for the tire. Vectran was developed for airbag systems in the automotive and aerospace industries. Tubeless The TL technology is specially designed to adapt tubeless to the demands of racing cycling. Easy to assemble and reliable in use. Specially developed, the tubeless foot seals particularly well thanks to its shape and ensures a stable hold on the rim. Active Comfort Technology The revolutionary approach in racing cycling. Integrated into the tire construction, the Active Comfort technology absorbs vibrations and ensures an outstanding driving experience. Lazer grip Makes you one with the road. The lasered micro profile structure concentrates on the shoulder area of the tire and offers you increased cornering grip. NOTE: On hookless rims, the tire pressure must not exceed 5 bar (73 PSI). Continental recommends using at least 30 ml of suitable tubeless sealant for the initial assembly. Technical specifications: Tire type: folding tire Intended use : Tour, Race, Time Trial Size (inches): 28 / 700 x 25, 28, 30, 32 Size (ETRTO): 25 - 622 Execution: handmade Germany, VectranBreaker, Active Comfort Technology, Lazer Grip, Tubeless Rubber compound: BlackChili Compound Carcass: 220 TPI in 2 layers (tread); 330 TPI in 3 layers (side walls) Tubeless ready: yes, tubeless ready (with the use of sealants) Compatibility E-Bike: - Profile: Lazer Grip, optimized for speed and grip Air pressure hook rim: 5.5 to 7.5 bar (80-109 PSI) maximum air pressure hookless rims: 5 bar (73 PSI).