The Slik Riks Wheel has the most durable Urethane due to its unique Polyurethane formula and grading.
Slik Riks have a higher resistance to temperature unlike other scooter wheels in the market, making Slik Riks last longer and prevent you from getting flat spots easier.
Slik Riks Urethane Grade is 88A. It may sound harder than some but it lasts a lot longer. 858 uses a wider radius on their wheels, meaning more surface contact with the ground spreading the weight load so it rolls softer and smoother than competitors.
858 wheels use a special bonding agent in between their light weight 6061 T6 CNC machined alloy ore, ensuring the strongest alloy grip and Urethane curing.