What kinds of vehicles are rolling on P275/40R20 tires? This is a tire size you’ll find on lots of performance-oriented cars and crossovers like the Audi Q7, Dodge Charger, Dodge Challenger, and Porsche Cayenne. For vehicles like this, you’ll probably want all-season tires that can offer good road manners, long wear, warranty coverage, year-round traction, a quiet, comfortable ride, and predictable handling. Or, you might tend toward summer or ultra-high-performance tires that feature a softer, stickier tread compound and a tread design that allows better cornering and steering response. Just be mindful that the rubber compound of UHP tires will stiffen and lose traction in colder weather, and shouldn’t be used when it’s colder than about 40 degrees Fahrenheit outside.