Thanks Chance. I missed your post.
Druff, there are two versions of the CT8. The All Seasons version is the one with the greater load index. It's the way I'm leaning. What I'm looking for is reasons not to buy the Nexens. (or the Continentals). I like the idea of keeping my 16" rims, not just for the money but in case I damage one. You can always get a replacement for the OEM. The 17.5's I don't know.
https://tiresize.com/tires/Nexen/Roa...-225-75R16.htm