1. about 25 but i can always feel it
2. not that i know of at least not the back ones
3. i have koni yellows and skunk 2 and ithey feel and look and feel fine
4.never had a problem or thought i needed to rotate ( no dramatic wear.
5. not to long ago and it was the front i think and the front is fine
6. the mentioned a couple flat spots from being of balance but i think it to minor to be the problem but maybe it is.
7. as i said the funny wear is to minor to cause this or is it just enough i dont know.

should i just break down and get new tires to see if this is it and i also have time tues i might rotate them just to see what happens