2012 DCSB TRD warranty is about up... (leafs, tires, etc.)

I have a 2012 DCSB TRD Off Road Tacoma. I'm getting ready to hit 34,000 miles and have a couple questions before my warranty is up.

1. I have a 2+1 leaf pack and I can feel every single bump that I hit on the road. Some 2012 and newer models like my truck have the 3+1 leaf pack. There isn't a TSB that I know of, but if i ask/complain to the dealership, is this something they will look at/fix?

2. I have a terrible squeak coming from somewhere, my guess is also from the leafs. Anytime I hit the smallest bump, I can hear it. The only time that it stops is right before I go to the dealership. What is the fix to this? I have told the dealership about it, but like I said, every time I go, it stops.

3. I have the stock Bridgestone tires on my truck. I got a recall letter in the mail recently about tire pressure. My problem is, I look in the treads on all of my tires and they are cracked fairly significantly. I took the truck to my local tire shop and he said that he has seen this before from the same tires and that the dealership probably won't do anything about it. Anyone else have this issue?