Bumping this back up. I've noticed that in a 265/70 vs 255/75 the 265's for some of the same tires are an e load, but for 255/75 they are a c load... Is there a noticeable difference between 265/70 and 255/75? I know 75 will be taller and more narrow than the other.. but it doesn't seem like they are different at all.