Veramente io non presento niente, ho solo riportato un articolo che mi pare molto interessante ed esauriente.
Lo presenta PinkBike:
[url]http://www.pinkbike.com/news/Tech-Tuesday--Wider-Rims-Are-Better-and-Why-Tubeless-Tires-Burp-.html[/URL]
e mi trova concorde al 100% su quello che dice:
Why Wider Rims Are the Future of Tubeless
So, by now it seems clear that, if a slightly wider rim is good, perhaps a much wider rim could offer even more benefits. In the illustrations that I drew up, I exaggerated the widths of the rims to give a clearer view of the concept that the first benefit of wider rims for tubeless is to reduce the moment arm between the tire and the bead interface. Secondly and perhaps more important, the wider rim keeps the tires contact patch between the confines of the rim flanges under high deflections. Considering that a wider rim is proven to reduce the effects of lateral forces on a tire, it is unlikely that the tire on the wider rim would distort equally as I depicted in the comparison to the narrow-profile rim.
Still at 20 degrees, when we add more down force on the tires, the one on the wider rim can still transfer the extra load to the wheel because its contact point is hovering over the rim. Only a small amount of additional down-force collapses the tire on the narrow rim, pulling the opposing bead away from the rim flange and spraying bystanders with a noxious combination of crusty old Stan's sealant and sweat infused floor pump air.
With the pressure reduced, the tension is relaxed from the tire casing and the bead returns to the sealed position against the rim.
Another potential that a wider rim may bring is a suppler ride over small bumps, and at higher pressures than expected. Tests with wider rims and similar road tires by
Mavic and HED shows that the subtle change in the tires profile made a dramatic improvement in its performance. The switch from the classic lightbulb clincher shape created by confining the tire within a narrow rim, to one resembling a continuous arch made a dramatic reduction in rolling resistance over rough pavement at any tire pressure value. Cornering performance was also significantly better. Similar gains are.probable with mountain bike tires as the tire casing scribes a more relaxed arch over a wider rim, and can flex in a more uniform pattern when the tire is deflected.