Pirelli P ZERO™ Race TLR Folding Tyre. PirelliP ZERO™ Race TLR Folding Tyre 700c 32 mm. Unique to the P Zero Race TLR is that it is available in a wide selection of sizes, ranging from 26 mm up to 40 mm, with the 40 mm version attracting the interest of many gravel bike owners.
