Doubledown tyres are constructed in the same way as downhill tyres: two carcass plies reinforced with a butyl insert in the sidewall. However, thanks to two carcass plies with 120 TPI (instead of 60 TPI) and an aramid bead, they are significantly lighter than the downhill tyres, much more stable and robust than the TR + EXO tyres and therefore ideal for demanding enduro trails. Tubeless tyres on bicycles have many advantages. You can ride with less air pressure and therefore have better traction, the rolling resistance is lower than with an inner tube and with a sealant instead of an inner tube, the risk of punctures is greatly reduced as small holes are simply sealed. MTB tyres are used almost exclusively in competition, but the number of road cyclists is also increasing continuously. This extremely cut- and abrasion-resistant material protects the sidewall of various MTB and gravel tyres as well as some Metro models. It is very densely woven, yet light and very flexible. The performance of the tyres therefore remains convincingly good. Wide Trail Casing. The Wide Trail (WT) construction optimises the tread layout and tyre shape for today's wider rims. Conventional tyres have been developed for narrow rims and have too angular a shape on wide rims, resulting in less than optimum performance. WT tyres are optimised for an inner rim width of 35 mm, but work excellently on all rims with an inner width between 30 and 40 mm.