Answer: OK. If you are sitting on a hill more than 15 degrees, if you do it will make that grinding sound. in most car booklets say on a Hill 15 degrees or more put it in neutral than apply the emergency break. and you do not need to be at any speed when putting it into park.
Answer: Had same problem with mine, if you turn right and it grinds, the left hub bearing is going out and vice versa. The weight of the truck is placed on the bad bearing the opposite way you turn. Should sound like a grind but it is a consistent "noise""quiet""noise""quiet".
Answer: A lot of times the grinding sound that is heard when going overbumps is actually the car scraping the cement. If it is not aserious problem then the best thing to do would be to drive slowover the bumps.
Answer: When grinding, an abrasive material such as carborundum is used to remove material from the workpiece. When turning, material is removed from the workpiece with a cutting tool. The worpiece is usually clamped in the jaws of a chuck, and the chuck turns. the tool is clamped to a toolpost and moved along the workpiece and into the workpiece in order to cut material off in a measured amount.
Answer: The Brakes inside of the wheel could be rusty in the back and cuz some Grinding sounds, or the Transmission is Wet and Rusty which can also make a Grinding sound, If it happens to your Car, Notify me at firstname.lastname@example.org, u need to tell me your car if u need help.... if u dont and its just a Random Question, dont add me lol but really, ill help