Towing 8ft wide v 7ft trailer

Over the years I've towed three different 8' wide trailers, and now I have a 7' wide Kodiak. All of these rigs have been 22' or less in length. I don't notice any less inside room, as the Kodiak has a slide. All these trailers have been towed, for the most part with half ton pickups. I notice a little difference towing the 7 footer. It's nice just using my truck's stock mirrors, and also nice, as previously noted, on narrow roads and particularly narrow bridges. The 7' trailer hides behind the truck a little better, therefor pushing a little less wind, and gets the best mileage of the entire group. But this is not entirely accurate, as I've had so many different trucks.

All in all, I haven't noticed too much difference. I do know that I wouldn't want to tow an 8.5 footer.