According to Wikepedia, Xerxes was the fourth king of kings of the Achaemenid dynasty of Persia. According to Fyxation, Xerxes is one of the best winter commuters tire on the market. These 700x30c studded winter bicycle tires have 140 steel carbide studs that grip the road in all conditions and are a must for any year round cyclist.
Commuting to work or school on black ice just got faster and easier with the Xerxes. Studs provide unrivaled control on those morning rides where ice patches threaten your commute. When a layer of snow conceals black ice, the ultra-narrow profile easily slices through the fluff and gets straight to business providing extreme traction in these extreme conditions.