[ShrimpBurrito]

I have a Toyota Sequoia, which I believe is nearly identical in width to the Expedition, and when I put my McKesh mirrors on when I tow, it's like a whole new world compared to what I can see in the factory mirrors. If you've never looked in a mirror that was more off the door than the factory mirror, I can certainly see how you could think you're seeing what you need to see. But towing mirrors enable you to see all around the trailer just as your factory mirrors enable you to see all around your car when you're not towing. The mirrors are another thing to worry about, an added expense, and look not-so-pretty, but these drawbacks pale in comparison to the fact that they may save someone's life. Spend a few bucks just to try it out for one trip. If you decide you don't need them, take 'em back.

Dave