Thank you for the replies.
Special thanks to JBarca for taking the time to help me understand this better. I was really hoping for such insight from those of you with more experience.
Also thanks to downtheroad and mbutts for the Expedition/similar trailer insight. It is disappointing and at this point I'm wishing I would have just purchased a 3/4 ton truck.
I forgot to mention that the Expedition has the autoleveling rear suspension, so it was riding level.
The stock tires are Hankook Dynapro AT-m, 275/55R20. 113T.
