Hi Gents,
For the track:
In your experience, how long do tires last?
[My Kumho Ecxsta XS, stock size, have 7 track days with a couple more to go.]
What are some factors which can affect tire life?
[Seriously, everything from tire pressure to track surface to how you drive, brake]
If tire wear is continuous and consistent (no bumps, punctures, defects) how prone are tires to blowing out prematurely?
[Not very. You should be checking your tire pressure and inspecting the tread surface between each session. Don't whack the curbing
]
Are there any other questions that I should be asking?
[really need more info, are you looking for racing tires, DOT race tires or ultra high performance tires with tread wear ratings in the 140-200 range.]