Tubetype?

i got mickey thompson et streets... the sticker on them says "tubetype" does that mean i HAVE to go out and buy tubes as well???

Not necessarily. Many of us have run the ET Streets without tubes. I think the limiting factor will be how low you want to go on pressure. Go under maybe 12psi and you run a risk of the tire deflating. In any case you MUST constantly check tire pressure, because the tube-type tires will leak air through the casing.

M/T has a writeup on their "tech" page... worth reading.

http://www.mickeythompsontires.com/tech_tube_tires.html

so... i inflate them to 35psi to drive to the track with... drop it to 16 (warm) at the track... are they gonna leak like maybe 1 psi all day? or is there like a good chance im gonna have a flat before i leave the track?