Tires and Wheels problem
2007 Other Nissan Models 4 cyl Four Wheel Drive Automatic

hi
i have aproblem in my tires.
whenever i take aturn i used to complete steering wheel circle, but after awhile i stated to hear some knocking whenever i take aturn. i think its the tire which may hit something when i make afull deflection.
please can u help me to know what is the real problem and how to solve it.

thanks for your patience