275/50R19 Bridgestone Alenza Sport A/S UHP All Season 112V XL Passenger TireBridgestone Alenza Sport A S 275 50R19 112V XL OVERVIEW The Alenza Sport A S from Bridgestone is a premium ultra high performance all season tire that's used as original equipment on select Mercedes Benz vehicles. The Alenza Sport A S features circumferential and lateral grooves to evacuate water and resist hydroplaning, a long wearing tread formulation, low profile sidewall, and a tread pitch that's computer tuned to resist hydroplaning.