How do you change tire on citroen xsarro Picasso?

To change a tire on a Citroën Xsara Picasso, first ensure the vehicle is on a flat surface and engage the handbrake. Loosen the wheel nuts slightly before using a jack to lift the car until the tire is off the ground. Remove the loosened nuts completely, take off the flat tire, and replace it with the spare tire, tightening the nuts by hand. Finally, lower the car back to the ground and securely tighten the nuts in a star pattern to ensure even pressure.