Besides the look, anything special? Which Isuzu truck came with it? Where can I find these to purchase? 16" vs 15" beside the looks, I know 15" are lighter, but not by much? Is it better to go off-roading with the 15" or 16", I have no idea. I've read that the 1st gen Troopers came with the 15" snowflakes. The specs for the those two sized wheels are the same right? offset? bolt pattern?