I'm holding out hope FR will make this somewhat right given I got 2013 tires on a new unit. I'm still going crazy in my tire search. I think at this point I'm leaning towards Michelin XPS Ribs 235/85/16.
My rational and please comment with opinions(especially Tireman9).
My rims are rated at 3640# The tires on now are ST rated at 3420#
5th wheel is 9700# empty, Max GVW is 12,000#, 6000# axles, 1800# pin weight empty
Most gear on this model is well forward of the axles with a pin weight estimated around 2500#.
XPS ribs are load rated at 3,086# x 4 =12,344# so the XPS technically would cover max load. If we take out conservative 2000# pin weight from the 12,000# max we are back down to 10,000# and this would now leave me a 2000# safety margin, side to side differences etc.
I also don't know if my Hi Spec rims will handle 110psi and the XPS will run 80psi like stock. I also think that going to a G tire is somewhat overkill for my weights as last time we weighed in I was at 11,000#
Price wise I can get the XPS for $225 including mounting, metal valve stems and balancing. There is also a $100 rebate. I figure I can try and sell the take offs on CL.
I have been researching this to death and am just about fed up! We do a ton of local state parks in WI but do 2 long 2 weeks trips out west so safety of my family is important.
2016 Wildcat 312BHX
2015 Silverado 3500HD