Vittoria zaffiro road bike tyredot co m vector design tread for safe training tread is same as zaffiro pro and the aramid endura 3d compound a stronger casing combined with bead wire made from 4 twisted steel wires for better flexibility make zaffiro ideal for training aramid endura 3d compound training tyres are never durable enough for this reason we upgraded our aramid compound to increase its wear resistance maintaining the safe and inspiring road behavior our tyres are famous for