The 235/40R20 tire size is one you’ll find on the Cadillac XLR, Lexus LS, Dodge Caliber, and Mercedes-Benz GLA-Class AMG. If you’re driving something that is rolling on 235/40R20 tires, you are probably looking for all-season tires that offer predictable handling, a comfortable ride, good road manners, and year-round traction on wet or dry pavement. Or, perhaps you’d like the precise cornering and steering response of ultra-high-performance or summer tires – just remember that these tires use a softer, “stickier” tread formula for enhanced handling. This rubber formula stiffens and loses traction in colder weather, and should not be used when temperatures are consistently below about 45 degrees Fahrenheit.