Gents -
I am loving my new CM 4x! Feels like home. That being said - I too am looking at suspension changes. but I'm in a quandary...
On my 2011 CM, I did the 5100 all around, put on 275/70-18 (10ply) . The stance was AWESOME! The ride, not so much. When you put a trailer behind it, the ass drug badly - so I put Airride bags in back. After all was said and done, ride was real stiff. You'd go over a ridge/ripple/raised joint in the road and the back end would not soak it up and the head rest would whack you in the back of the head. I didn't like that.... But it would tow great. It seemed like it needed weight in the back. And yes, I did keep less than 5# in the bags when empty - actually let all the air out as I had the bags with the jounce stops in them so I was not worried about bursting them. I experimented with several psi levels. Didn't matter. So I am thinking it was a function of the 5100 + 10 ply tire combo. ??
I've had my new truck about 500 miles now and I've been gauging the ride quality carefully. I do not have TRD suspension. The tide is pretty good IMO - stiffer than I would have expected over bumps - getting some response similar to what I describe above just not as exaggerated - but I can also feel the body lean in tight turns. I'm not a shock guru so I'm not sure what accounts for those aspects. Truck is running on 275/65-18 Michelin LTX AT/2's. From all I can tell it's a P rated tire, maybe C since the max pressure is 51#.
So here's my dilemma - I want some level - maybe not perfectly level, but more so than now. I'm good with these tires. I do tow from time to time - enough so and heavy enough that I saw fit to put the air bags on my last Tundra. I have not put the trailer behind this one yet so I could be speaking out of school, but one thing I can say I liked about my F150 is the rear springs seemed heavier than the 2011 I had. I did not have reason to put bags under it with the trailers I towed- but it was not leveled either, so.... Basically, I understand I do need to hook a trailer up and see what happens to "Silver" as is. The new Toyota spring sets might be better - ?
I haul a lot of ass down the road and ride quality is important to me. But I also will push the truck to it's limit from time to time pulling something heavy on a trailer. What does you guy's experience suggest I look hard into doing? Right now I am thinking 5100's up front on the middle setting and doing nothing else. If I see the ass drag is too much to tolerate then I put some bags on - but I think I will go without the jounce stops - because I think some of what I was feeling was due to them not allowing enough shock travel.