Most people at my track run RP30's or Sorex 28's, people have different opinions about both but the RP30's are my favorite tire for carpet rubber. When you run mod with rubber tires it's equal to about 3 runs of stock, and 1 19t run is about 2 runs in stock. They definetly wear quicker with faster classes, as does all of your equipment. I've been using TQ purple (our track doesn't allow Paragon, good thing too, that stuff reeks
) , not sure if it makes a difference in tire wear though.
A diff should help tires wear better, I've been running a spool when ever I can because it's been working better in my car and with my driving style.
Having less air gap or a thicker insert noticably decreases tire wear, although you loose forward grip and gain sidebite.
Running less camber on your tires I've found helps tires wear better, I like to set the camber so the tires wear evenly.
I never rotate the tires, very important not to do on asphalt, but not as much of a factor on carpet. But I still don't do it. If you do rotate your tires, only do it front to back and not left to right. I mark each tire in a set with LF, LR, RF, and RR so I know where they go.
Setting up your car so it doesn't slide is easier on the tires. I usually find a softer spring to decrease tire wear since less weight from weight transfer is transferred to the tires. This is easier to notice with foam tires.
When your car is pushing the front tires wear harder because they slide, it's much more noticable on asphalt, though.
I hope some of this helps.
edit: That's what I forgot... I clean my tires with WD40 after every run and right before I sauce them if the tires have been sitting for a few days. It helps remoisturize them.