I use Dresser retreads. Last a LOT longer than new tires.
I also sprung for AirStop tubes - and have not regretted it!
There is another thread about brake pads. I don't remember the results
If your local airport group (EAA??) doesn't have a brake pad tool to borrow, any of the regular hardware suppliers (ie Aircraft Spruce) have them - same tool no matter where you go