4! or 1x2x3x4 or 24 ways.
You don't need to rotate MY tires but, you need to when your car goes left or right when the wheel is straight.
You can rotate them two different ways. Back to back, always keeping the tires on the same side of the car is one way. But the preferred method to rotate them is to move the front tires directly to the rear keeping them on the same side of the car as they were installed on as in, RF to RR, and LF to LR. Then take the rear tires and move the RR to the LF, and the LR to the RF.
Drive the car, silly.
6000 miles is the usual recommendation.
cross X-pattern diagonally across the car
yes
It is possible to rotate your car's tires by using individual jacks on each end of the car. However, using a lift makes the process go much faster and safer.
more than likely, its the front tires if a front wheel drive.
The point in time when one's tires need to be rotated varies. To be sure about the car in that individual's possession reading the manual could answer that question. However in the event that it doesn't, one should rotate the tires of the vehicle every 5,000 miles or 10,000 miles.
It is usually recommended to rotate them about every 6000 to 10000 miles depending on the car. Typically that equals about every other oil change.
Anything that rotates fast needs to be be balanced to rotate smoothly. Try sticking a piece of chewing gum on a fan blade and see what happens - This affects the speed that cars tires rotate and causes vibrations if balance is not perfect.
Depends what tires they are because different tires have different densities...