1 tire line. 34x10.50R17 tires sized to your wheels and your car.
A 34x10.50R17 stands 34 inches tall and 10.50 inches wide on a 17 inch rim, the metric equivalent is 267/81R17. A tire size only makes sense next to a wheel width and a car. 34x10.50R17 mounts on a range of widths, and the overall height decides whether the speedometer and the fender stay happy.
1 line carries 34x10.50R17, from Toyo. By type that is 1 all terrain. 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 34x10.50R17 lines that do both.