I have two vehicles that are due for tire rotation, and I've never done it before. I've rebuilt carbs, motors, tranny swaps, lift installs, etc. but I've never rotated my own tires;g . I grew up about 1/4-mile from a Les Schwab tire store and it was always free. One vehicle is a front-wheel drive car, and the other is a rear-wheel drive/4wd SUV. What is the pattern I use?