I have tirestickers on my car and have also installed them on customer cars. Very happy with the results, absolutely no issues as long as they are installed correctly.
Answer to your questions;
1- Mastercraft tires
2- Sanded off the lettering with a medium scotchbrite pad mounted on a rotary
angle grinder. Random orbit sander works also but much slower.
3- 5 min per tire
4- Clean surface very well, get rid of all traces of silicone tire dressing. I
definitely recommend sanding the original lettering off the tire to give a
smooth surface to apply tire stickers, plus it looks better. Do not use too
much glue, it will ooze out along the sides and will be difficult to remove.
However, you must use enough glue to make sure the corners do not peel. I
use small dots of glue and make sure each corner gets a dot. The glue they
give you is superglue type gel.
5- I found it fairly easy, if you are clumsy, sloppy, absent minded person, then
maybe not for you.
6- Stick very well, I tried removing some after a customer changed his mind,
had to be sanded off, could not peel them up.
7- Year or more
8- 1000 miles
9- They get dirty like any other white lettered tires, nothing different as
tirestickers are made of rubber also.
10- 409, Greased Lightning, works well to clean.
11- Would not do anything different
12- I rate them a 10, and I am not easy to please.