Hard knocking

[Epic]

IV noticed lately when iv finished work at like 1am and the cars frozen up. when i goto drive off at about half turn lock to turn out the car space theres a knocking like maybe every rotation of the wheel and its really noticable... but after a about 5min of driving all it fine again. its only when turning. and only when first setting on. when i got home and fully locked it to turn around etc it was fine... dont know it its the cold getting to some of the joints or what

is it anything to worry about you think

[Dave]

check your UV shaft boot on the side that knocks maybe its split and you have no grease left on it