300034 wow thats like 1.2 million lb and the what the hitch can carry, sure your truck is up to the task? Sorry I couldn't resist. I am assuming you meant 3034lbs. So x4 would be 12136lbs + the pin weight so where ever that leaves you as I am not familiar with your unit.
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John & Deb
2011 F250 Lariat FX4 Crew Cab 6.2
2011 Flagstaff V-Lite 30WRLS
Not sure why the snide remark but if you took my info and went to FR's site like I did and added the over 2k dry pin weingh you would see you are ok. Also you never mentioned what your current tires are rated for? And if they are rated for more why would you look at a lower rated tire to start with?
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John & Deb
2011 F250 Lariat FX4 Crew Cab 6.2
2011 Flagstaff V-Lite 30WRLS