I see some folks talking about GY614 NO! GY614 are rated at 110 psi. you can't use your old low pressure 80 psi rims. You would have to get new high pressure rims a waste of money.
I just looked up your rig & you have "Axles (2) 7,000 lbs." Why put a GY614 or 17.5 tires on a 7,000 lb. axle. You would need to change out your axles for heavier axles.
Just get a good LT tire like the BF Goodrich Commercial T/A a very good tire at a good price.
Now I have Michelin XPS Rib on my Dodge they are very expensive{price on 6 $16/1900 walking out the door} but I got 85,000 miles "I rotate every 5K" on my last set so they are the cheapest tires I can put on my truck. You are not going to wear the tires so don't don't throw your money on XPS Ribs. As you should get new tires at 5 years no longer than 7 if you keep them covered when setting. Now you will not want to get new tires as the old XPS ribs will still look like new.
One last thing when you get new tires have them balance the tires. You will have less vibration = better ride less wear. Would you get tires for you truck & not have them balanced?
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