The wider rim adds stiffness and gives a profile that resembles a tubular tire h plus son have always admired the look of the classic box section rim from sourcing double eyelets to crafting new molds for the valve badge and its hardware they have dedicated neurotic attention and careful detail to every aspect of this rim the advantage of this rimtire profile can be felt immediately when taking corners as the tire is no longer shaped like a light bulb flopping over with high loads the tb1