Trailer tires - what are you running?

Think my 5ver is going away. 2015 Dually paid for in less than 3 years and only 9k on the odometer. The $680 payment is gone and the wife wants this to replace The Montana 5ver. What are these tires going to cost down the road? Least it is a 400 Cummins with Allison and should be fine to pull the car hauler as well.

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