 Mercedes-Benz AG has selected the Cooper Discoverer SRXLETM tire as original equipment OE on the new Mercedes-Benz GLS, the automakers next generation full-size SUV. The Cooper Discoverer SRXLE is a premium all-season SUV and CUV tire that has earned acclaim for superior innovation, technical achievement, quality and workmanship. Discoverer SRXLE fitments on the Mercedes-Benz GLS include the 27550R20 and 27555R19. 