What kinds of vehicles are rolling on 255/35R20 tires? This is a tire size you’ll find on 2010s-era models of the Mercedes-Benz C-Class, BMW 2 Series, and Genesis G70, among others. 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 be the kind of driver who likes to push the envelope a little. In that case, you’d appreciate the precise handling and steering response of ultra-high-performance or summer tires. Just be aware that UHP and summer tires use a softer, “stickier” tread formulation that hardens in colder weather, and shouldn’t be used when temps are below about 40 degrees Fahrenheit.