1 tire line. 375/45R24 tires sized to your wheels and your car.

A 375/45R24 is 375 mm wide with a 169 mm sidewall (45 series) on a 24 inch wheel, 37.3 inches tall overall. A tire size only makes sense next to a wheel width and a car. 375/45R24 mounts on a range of widths, and the overall height decides whether the speedometer and the fender stay happy.
1 line carries 375/45R24, from Nitto. 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 375/45R24 lines that do both.