A large flat edge on the bottom of the bead results in more surface area contact with the shelf of the rim. This increased surface area creates a more effective and secure seal for tubeless set ups. The surface of the entire bead is also smooth, reducing the number of small gaps that allow air to leak between the bead and rim shelf. Running your fatbike without tubes can reduce the weight of each wheel by 300 grams and provide a suppler ride quality. Always consult rim manufacturer instructions before setting up tubeless tires to ensure safety and compatibility.
Tiny grooves on large tread lugs create more edges for grip. These grooves also give the tire more flexibility to move over surface undulations, providing enhanced acceleration, braking and cornering traction while also creating a more comfortable ride quality. Siping has been used in the automobile industry for years to augment the performance of tires in winter driving conditions.