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Continental tires has made great progress on the mtb market in the past few seasons with a combination on new, highly effective tread designs and use of their Black Chili rubber compound. Black Chili brings the properties we are all looking for--faster, grippier, longer wearing--to a single compound through the use of nano technology. Carbon black, used to make rubber "tough" and wear well, has been ground to a very fine and consistent size (the nano tech), which allows better distribution in and bond with the rubber. The small size and shape makes the rubber more elastic with less shearing. The elasticity increase the grip while decreasing rolling resistance. Improved shearing extends tread life. Sounds impossible, but you can feel it on the trail and Black Chili has become the rubber of choice among many riders. How to know that a Conti tire uses Black Chili is a bigger issue. Nowhere on the tire itself is there a BC label. The rubber looks and feels no different than non-BC tires. According to Brett Hahn, Continental brand manager, there is one sure way to know: the big "Handmade in Germany" label on the sidewall. Black Chili is produced and used only in Conti's own factory in Germany. Because of the home factory exclusive of BC expanding its use to other models is limited by the plant's capacity. The long term plan is to bring the popular 29 inch tire production "home" and use Black Chili. The timeline is unclear. In the meantime, look for 29er versions of the Trail King (nee Rubber Queen) in 2.2 and 2.4" widths by this fall. These tire may also be, a first for Conti, tubeless ready. No Black Chili yet, though. I am happy to see the Trail King coming as it may be the best all-round mtb tire ever from Continental. |
Tire Ride Reports Just In Just in: Kenda ExCavator 1.95, 2.10 and 2.35
I received a pair of the 2.10 versions a couple of years ago and liked the ride. I now have a complete size run--1.95, 2.10, and 2.35--of the folding bead version ExCavators for more extended testing. Eric Carter chose a variation of the long-proven square block tread arranged in the versatile alternating row pattern. The wide center knobs create a paddle for good drive and braking traction with the leading edges slightly ramped to improve the rolling resistance a bit. The row of transition knobs is fully offset (centered between) from the center and edge tread. Better for roll-the-tire-into-the-lean riding styles than the Nevegal, and it works on a wider range of rim widths. It you want the gap-row tread for throw-the-bike riding style the tire can be grooved, and Carter gives his tread modification tips on the 
