Dude, breaks my heart. Force them out of the house and take them now or it won't happen. They will thank you alter and y'all will have some great memories.
I ran MT ATZ P3 35's for 45,000 miles and they are the best I've ever run on and off road, for near extreme wheeling and low road noise. Cheers. Old thread I know.
No meth njection, just upgraded cooling system. 10# is what I could hit (sold the truck) and I generally kept it to 8# with the skinny pedal. Ran it for a few years and 0 issues.