if it was wheel bearings you would hear metal scarping againts each other all the time driveing, which on of the balls must be cracked or hole thing gone from experience just spent $370 to get it all done both front wheel bearings compressed out and in lol and had to get hub changed as well as rode like that for 3 months lol, but befor i did that i got it checked out by power steering specialist and he told me that rattleing noise while turning could be ur CV joints, but this will only happen when turning hard or just a little, then you would have to get ur power steering recoed i dont know price as i didint get to ask lol but goto any specialist and get them to check it out and give an assesment on price and get back so i know how much it will be too lol just incase