45 tire lines. 245/45R18 tires sized to your wheels and your car.
245/45R18 means a 245 mm section width, a sidewall 45 percent of that (110 mm) and an 18 inch rim, which works out to 26.7 inches tall. Whether 245/45R18 works comes down to the wheel width it mounts on and how far it lands from the height the car left the factory with.
45 lines carry 245/45R18, from 16 brands (Continental Tire, Falken, Michelin, Hankook and 12 more). By type that is 33 all season and 7 performance summer. The tire has to stay near your car's stock height and mount on your wheel width, so pick the car and the wheel set and the page keeps only the 245/45R18 lines that do both.
