what street tyres for grip but last longer than MTs

I am running the M/T Sportsman ST tires, daily driver for over two years rain or shine.
The tread is holding up very nicely, the suspension on my barracuda is my weak link, not the tires.

I am running 15x7 with 225/70/15 on the front and 15x8 with 255/60/15 on the rear.

I can't fit the Nittos in my wheel wells. :BangHead:

I was actually considering switching to the ET Street SS when I get new tires. How long did yours last, and how hard are you beating on the car and tires? Do you heat the tires up before every pass? Are you autocrossing it?