I have a 4WD and i rotate my tires every 5K since new. I haven't seen no difference yet.
Ooops!! I guess I should qualify my question with "Assuming if you do not rotate your tire".
Under normal circumstance, that's exact I would do. However, I'm in situation where one axle has just a bit more thread then the other. Since I purchased the car used, I'm not sure if the previous owner have just rotate the tires, or was the thread depth difference is the result of neglecting to rotate the tires.
So, that's my story.
Thanks
B