Got the new 235/85R16 Cooper S/T Maxx's mounted up yesterday.
So far I like them, running at 38 psi F&R and they are slightly rougher than the Duratracs on sharp bumps on the road (like overpass transitions). Nothing that really bothers me though. If I dropped them down to35 psi like I had the Duratracs I think they would be hardly noticeable. Based on the "chart" printed by the various tire companies, I should be running somewhere between 36-38 psig to match the original P-rated tires load capacities. I chose to start at 38 psi to account for the additional weight that's been added to the truck. Someday I may do the chalk test, but I'll probably remember to do so in about 60k miles.
They are very quiet, more so than the new Duratracs we put on the FJ last week, but they're completely different vehicles and sizes. One of the biggest differences I noticed right away was the ease of steering, they also feel as though they have less rolling resistance. The weight is spec'd identical between the two (45 lbs), so I didn't gain any additional weight. They didn't appear to take much weight to balance and there's no funky pulling to the side characteristics, they track very straight.
I like them enough that I ordered the spare today. I read where it would fit in the stock location without modification, but that's not going to be the case. It may slide past the edges on the turned down tabs, but there's no way it's pulling all the way up to the cross member, unless I don't inflate it. I'll massage the turn down tabs easily to welcome the spare with open arms though. It also appears that the E-brake cable holder tab that's welded to the back of the diff will contact the spare, but that should be easy to move forward with my 3 lb rounding hammer
Too cold & dark to get any decent pictures -