Echo what Nick said. Haven't done that many track days, but never had the tyres give a mm in the dry no matter how silly I've been.
I also tend to take about 1.5 laps of a decent size track before getting up to pace, might not seem like much but there's
always someone who comes off on the warmup lap. The ultimate muppet award!!
Remember, all the warmers in the world won't help much on a damp/wet track. Take care and keep it upright.
Cheers,
Ali