I'm currently using a 275 40 17 Mickey T DR and it sits taller and more narrow than the 275 40 17 Sumitumo HTR III that I had on there. The street tire was a tight fit with maybe a 1/8th of clearance on the fender I got plenty of room with the dr on there. I will be moving on to a Nitto Dr in the near future, I'll let you know how it works.
*this is with a 10.5 rear wheel*
*this is with a 10.5 rear wheel*