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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
trials tire on KDX?
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[QUOTE="blackduc98, post: 1329097, member: 65764"] I ride both trials and trail, so maybe I can offer a little first hand info here. I don't think I'd ever want a knobby on my trials bike, even if it was legal. I simply don't think it would work well in sections, where there is almost NO dirt at all. A typical trials section is very tight turns over rocky/rooty terrain. Approach to obstacles such as logs and rock ledges is such that you have little or no running room. If there is actual dirt involved, it is usually steep off-camber, and/or covered with leaves. Spinning the rear to get it "hooked up" is not an option. And when it rains, the difficulties are compounded. So a trials tire must get its traction from zero speed and without any spin. The only way to do that is with a very large contact patch, and lots of soft knobs that wrap themselves around anything and everything. To achieve this, trials tires are designed to operate at 5 psi, and even lower depending on conditions. Pinch flats in the rear are not a concern on modern trials bikes because rear rim is tubeless. Vast majority of competitive trials riders in my area use either Michelin X-11 or Dunlop 803. If you've ever been to a trials competition, you'll know that sections are connected by several miles of trail, and sometimes the trail itself can be as difficult as the sections. You will be surprised by how fast good trials riders fly on the trail. Compared to riding my KDX on those tough trails I am much faster on my trials bike. BTW, I do not consider myself a good rider in either trials or trail. So this prompted me to try a Dunlop 803 on my KDX, since we don't have any wide open fast trails in my area. 803 works pretty well in both dry and wet rocks and roots and hill climbs. I try to avoid deep mud, so I can't really give any valid info about deep mud performance. I should mention that when I tried running 10 psi I ended up with a pinch flat after 20 miles on a brutally rocky trail. Since then I installed a Bridgestone UHD tube, and I keep the pressure above 12. So far no more pinch flats. But I do wonder how much benefit I am losing by running at this "high" pressure. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
trials tire on KDX?
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