German magazine TOUR has recently featured a comprehensive road tire test, covering many aspects of tire performance, even including Real-Time wet grip where their human tester donned motorcycle leathers and pushed his specially adapted test bicycle to the limit on each different set of tires. Grand Prix 4000 S Schwarz, Schnell, The new special edition of the Grand Prix 4000 with Black Chili Compound.

Grand Prix 4000S was the most consistent tire with a weight of 207 grams on the test sample. Its rolling resistance measured in at 34.3 watts, beating even the lightweight race only tires from the competitors. The resistance was measured using a rig where each tire was spun against a rolling drum at 35kph at a load of 50kg, conducted by independent TOUR engineers. The variable was the force, converted into a power output in watts needed to power each tyre at the given load and speed.

The speed at which the GP4000S reached on the wet corner was 33 km/h, almost the same as Continental wet specific GP4Season, and higher than its main competitors. The time it took a sharp screwdriver to penetrate the GP4000s through the tread at a load of 35 kg was three minutes. In fact the test was stopped prior to any penetration as three minutes was defined by the magazine as a pass. Only two other brands also attained a pass grade here.

Continental Grand Prix 4000 S catches the eye with its big silver labels. Aggressive and noble alike it matches every high end race bike perfectly. With the reduction to black and silver the Grand Prix 4000S does not clash with the frames color or rim stickers. S stands for sport, special and Schwarz the German term for black. But the Grand Prix 4000 S can do more than just look good. With the new Black Chili Compound rolling resistance is reduced by 26%, grip is increased by 30% and mileage is increased by 5%. Features:

• Size 700 x 23C (23-622)

• 3 plies with 330 tpi plus Vectran Breaker