All cars make noise, but when they start making a noise that isn't "normal" then it's time to have it properly diagnosed and checked. A grinding noise when turning can be an indication that your power steering pump is starting to fail. It could also be due to having air in your system. If you have air in your system then you may have a leak that is allowing the air to enter.
Give us a call and let us take care of you 541-791-2886.