If it only happens when you turn all the way (when the steering wheel won't turn anymore), then it's 100% normal. If it's any left turn, it's probably a balljoint issue.
It's probably the turn stops under there just needing grease. Look under the front near the wheel and you'll see them. It's just a stud with a plastic cap on it that hits a little flat spot to stop the wheels from turning any further. Just slap some grease on the ends and it should stop. If you can't figure out what I'm talking about I'll post a pic.