Silca Protocol RCR 700c Tire Wide Is Fast Now Road riders who have been told that a wider tire means a slower tire should look closely at the Protocol RCR. The industry treated 34-38mm tires as if they were meant for touring, with thick casings that made them slow, heavy, and dead feeling. The RCR takes a volume-centric approach that prioritizes width and speed without adding useless bulk. The increased air volume absorbs impacts and reduces flat risk, making it the right choice for rough pavement and long days where comfort holds your speed together. It balances pavement efficiency with confident handling on the mixed surfaces road racing now includes, and holds its shape at the lower pressures wider rims allow. Features Pulsar Compound high-performance rubber and silica race compound engineered to hold rolling efficiency, grip, and durability in balance rather than trading one away for another Seal Skin Tread Protection under-tread puncture protection layer for durability on rough pavement and mixed surfaces 120 TPI Race Casing developed around modern tire pressures so the tire keeps its shape and ride quality at the pressures wide rims actually run Carbon Bead Lock eliminates the safety vulnerabilities typical of hookless setups; unlike standard Kevlar beads that stretch and creep over time, the rigid carbon fiber beads never stretch Tubeless-ready engineered for modern tubeless systems from the bead out Available widths: 29mm, 34mm, 38mm weights of 290g in 29mm, 320g in 34mm, and 350g in 38mm; widths measured on a 25mm rim after 24 hours Specifications Size700c Width(s)29mm, 34mm, 38mm Compound Pulsar Compound Protection Seal Skin Tread Protection TPI120Bead Carbon Bead Lock (carbon fiber, folding)Type Tubeless Ready Tubeless Compatible Yes Conditions Pavement, light all-road, cobbles Weight290g (29mm), 320g (34mm), 350g (38mm)Intended Use Road | Silca | Protocol Rcr 700C Tire 700X38, Pulsar Compound, Race Casing | Rubber