![]() ![]() To that end, Bridgestone, Dunlop, Michelin, Metzeler and Conti are your best bet. The best thing to do is to avoid tyres that are manufactured using the low sulphur process. Low sulphur vulcanising reduces the moulding pressure and temperature, which reduces inter ply cohesion and inter ply shear stress tolerance, so eventually the combination of compression, tension, shear and tortion experienced in normal operation results in ply separation if any one of the forces exceeds design limitation. ![]() Now add the shear force of it being cranked over into the mix and you have a small portion of the tyre carcass trying to withstand four conflicting forces. ![]() The bit in contact with the road is going slower than the rest of the tyre, so the front of the contact area is being compressed, and the back of it is being stretched. As the wheel has a constant angular velocity, the linear velocity is therefore variable. When a tyre is on load, the rolling radius at the bottom is smaller than at the top. Some manufacturers use the low sulphur vulcanising process, which is environmentally impeccable but bad news for any other consideration. This is how the various “compounds” can be produced. Road tyres for cars and bikes are made from synthetic rubber. Have done few thousand n BT-45s and they are also a very good tyre for the money.Chances are, if youre riding that hard to make a difference you should be looking at higher quality tyres.The sport dmons were stickier thn the BT45s but the BT45s lasted 5000km longer on the rear the fronts seemed about the same. Looking at those pictures, it looks like a classic case of interply shear failure.
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