I've decided to ditch the 20" wheels and get 18" on my 2012 Overland Summit. However, in researching what I want verses what I need, I think I've confused myself. It mainly boils down to offset and wheel width. Currently, I have the stock 20x8 wheels. Here are my points of confusion:
1) Everywhere I have looked states the offset for the stock wheels as 35. However, the markings on the inside of the wheel indicate the size as 20x8 56 (here is a pic):
So, which is it? Or, am I reading the markings on the wheel wrong? To me, the wheels look very flat, and do not have much of a concave look at all, so they lead me to believe they are 56, not 35 as stated in various places, including here. Do the 20" wheels on the 2012 GC Overland Summits have a 56 offset?
2) How does the wheel width affect the offset? If I go with a 9" wide wheel, will I need to get a wheel with a smaller offset to push it away from the suspension/brakes or can I keep the same offset (I really don't like the concave look of lower offset rims)?
3) How does changing the offset affect the handling and wear on the components? This is pretty important to me.
Like I said: I've read a lot of stuff on this, both here and on various tire sites and I think I just confused myself.