For most people who shop 2012 Mercedes-Benz GLK350 tires, the best bet is going to be premium all season tires that can deliver a good balance of long wear, great handling/road manners, a quiet, comfortable ride and year-round traction. We’d suggest tires like the Michelin Pilot Sport All Season 4, Pirelli Scorpion Zero All Season, Dunlop Grandtrek Touring A/S and Yokohama Geolandar X-CV. To really get the most out of the handling potential of your 2014 Mercedes-Benz GLK350, think about summer or ultra-high-performance tires like the Michelin Pilot Sport 4S, Pirelli Scorpion Verde and Bridgestone Dueler H/P Sport. Just be mindful that summer and UHP tires use a softer, stickier tread formulation that delivers great grip, but will stiffen and lose traction in colder weather. These tires shouldn’t be used when it’s colder than about 45 degrees F outside.