Street Tire Dilemma

I run Nitto Drag Radials on both my Mopars 275/60-15 and 325/50-15's. The are the only thing that makes these cars safe to drive on the street.

They don't like cold weather and last me over two years. The smaller tired car is a daily driver. They are Z-rated and work well in the rain. Only tires I'll ever put back on again. Love them!
Yup...I considered them. I'm in south Florida. Some people reviewed them on-line and said they would get sticky after a moderate spirited drive on hot days. What have you found regarding using them on hot summer days... which is the weather here for 9 months a year? Do they get so sticky that the pick up pebbles and whatever? The pavement temperature here hits 140 during the day. And yet the BFGs don't hook.