Jim,
Thanks for the comment. As I have said previously, my rig came with E rated Mission tires on 16 inch aluminum rims but upon further inspection, saw on the inside of the rims a big G and 3750 lbs. so I after much thought I am buying the G rated 614's this week before a 51 day summer trip. I am assuming that my spare white rim has the same capacity as my tires on 6,000 lbs axles. I will find out during the mounting process. I am inclined to buy the 5th tire for the spare if it has the capacity for the G rated tires like the others as Ray questioned. If not, I will just leave the same E rated one on for emergencies. Now the question will be how much PSI should I put in the 4 mounted tires G tires? The max is 110 lbs. but here is my weight distribution as of last year. Any of you math wizzes are welcome to chime in.
Without rig:
steer axle: 4840 lb
drive axle: 3700 lb
trailer axle: 0
gross weight: 8540 lb
With rig hitched up:
steer axle: 4760 lbs
drive axle: 6440 lbs
trailer axle: 10,680 lbs
gross weight: 21,880 lbs.
I might add that that my wife was in the truck when weighed without rig. Forrest was standing in front of my front bumper and DW was not in truck when all weighed together. My big question is what PSI do I run the 614's? I am guessing around 95-100. Anyone got a clue? Don't want to trust the tire guy who is mounting them. Lastly, would anyone tell me my pin cushion weight is (I think 2740 lbs) as I know its not too heavy but was curious in case I need to change some weight distribution? And what would be the ideal pin cushion weight? For added info my Ford tires are 18"