I have a noise when i slow down and turn like a knocking sound coming from the right side anyone know please help

 

I have a 2003 GS 300, about 15,000 miles. The left front wheel started making a "clunk" noise a couple of months ago, when I pull into my garage or go slowly over a speed bump. The dealer service department says this is "normal". I own two Lexus's and one previous. This is the first "problem" I have had that the dealer didn't get right ontop of. My solution is that my wife is taking it back in next week. We'll see if there's another reason.

 

My lexus is a 98 gs400 with 160000 miles and i can not find out the clunking noise on right side when i turn when you take your car in and find out the problem please let me know thanks

 

Plan on taking the car in the end of the month. Will be sure to post the results.