Yeah, the 20s are one reason to not order the King Ranch pkg. And the split spoke on the 18s looks less robust than the solid one on the 17s. So since the 17 also gives the tallest sidewall height, it is the theoretical winner. But my '88 T-Bird has 14s, and they no longer make H rated 225/65-14 tires. So I have to run 112mph rubber on a 130mph car. Will the future bring another surprise like no cleated tread 17s? I hate to get stung on a new truck, now where's my crystal ball?