i have exactly the same problem,
knocking at full lock when doing a right u-turn
its not a click its definitely a knock... it goes knock-knock, knock-knock, knock-knock.... etc

doesnt matter if i have just started my car or if it has been running all day, it will knock on the right hand u-turns but not the left hand (i preformed a quick test to c if it happened on the left side)

car has tein SS coilovers coiled down to the last thread
170,300 kms on the chassis


i replaced my front drive shaft 5,000kms ago so i was doubtful it could be anything there & started to think it was engine knocking.

could it still be the driveshafts or CV joins evn tho theyre practically brand new?