Ease of towing an 8-ft wide trailer vs a 7-foot trailer

I would think it would matter depending on what they are towing with. I have an 8ft wide tt and i have 2 enclosed cargo trailers, one being 6ft w and the other 8.5 wide. Behind my pickup there is no differance between the tt and the 6ft trlr but the 8.5 is noticable in trying to see behind. I tow the 6ft with our SUV but wouldn't even consider the other 2 with it as the SUV is too narrow to be able to see.