Pocketlake1,
Here is a link to the Sailum customer service page web site with phone numberrs:
Click Here.
Hopefully they can give you straight answers.
Myself, I do not know how a tire rated for 110 psi would function on a rim rated at 80 and the tire pressure was set to 80. But I agree, that much of a difference in tire pressure "seems" like it would affect the overall performance of the tire and cause an under inflation uneven tread and side-wall wear problem after a period of time.
Give them a call, see what they say. Report back what you find out and what your final decision is on the tires.
Good luck!
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History is not about the past, it's an explanation of the present.
2019 Montana High Country 375FL
2014 Chevy Silverado Duramax, 6.6L Dually