My truck came with factory chromed steel 16s but since I bought it used the wheels didn't quite match and it's always bugged me. I lucked into a good deal on a set of factory Chevy alloy 17s so I jumped.
So I went from 235/85/16 to 285/70/17, which have almost exactly the same height, and wow what a difference it made in ride quality and handling! Truck doesn't feel like its bouncing along on balloons anymore!
I finally got to tow the TH with them on and its the same deal, truck feels more planted and handles so much nicer.
I'm sure it has to do with the shorter sidewall. If you have the chance...do it!
2005 Silverado 2500HD with 8.1L/Allison pulling a 2007 WW FSW 2800.