I miss the sidewall you get with a 16" wheel.
I don't doubt that the shorter sidewall with an 18" wheel performs better on road, and they do look really good, but I like to air down.
I've got 5x 275/70R18 Toyo ATII's on 18" factory rims. 2 of the 5 tires are practically brand new (nubs still on one), and the other 3 only have a few thousand miles. They're great, I just wish I was running with a little more sidewall for airing down.
I'd trade wheel for wheel, @CulDog 02 , but I've got to get out of the 5 Toyos in decent shape to get back into some 295/75R16s.