Has anyone run the Pirelli or the Metzlers DOT approved tires? I have been running the Dunlops D739s (I know they're not legal but...) and I do like them...but... I have been running the bike on the street a lot just looking for something to last a bit longer. I have got 1000 miles out of the last Dunlop...it is bald. I live in the desert, this part of the country isn't kind to tires.