What Our Gearhead(R) Experts Are Saying:"The Strada Bianca Pro Tubeless Tire is what I put on when the route mixes fast pavement with stretches of packed dirt and light gravel. The SMARTplus compound rolls efficiently on asphalt and still hooks up with confidence when the surface gets loose. For riders who want one tire that genuinely earns its place in both worlds, this is it."Some rides refuse to stay in one lane, bouncing from smooth chip seal to dusty doubletrack without warning, and the Challenge Strada Bianca Pro Tubeless Tire was made for exactly that kind of day. Built on the DNA of Challenge's classic road models and reinforced for the demands of mixed surfaces, it delivers the kind of rolling efficiency you expect from a dedicated road tire while staying composed when the pavement disappears. The herringbone tread pattern keeps things fast and quiet on asphalt without giving up the edge traction and climbing grip that loose gravel demands. The handmade construction sets the Strada Bianca Pro apart from anything coming off a production line. A 260 TPI Super Polyester casing brings a supple, road-like compliance that smooths out chatter on rough pavement and absorbs the irregularities of packed dirt without killing momentum. The SMARTplus compound adds a layer of durability over the standard SMART formulation while retaining that natural softness that only comes from skipping the vulcanization process. PPS2 puncture protection reinforces the tire from the inside, giving riders the confidence to push pace on unfamiliar surfaces without second-guessing every line.