I have noticed in several magazine that the Dirt Devil tires are now called Dirt D's. Whats up with that?

 

They are still Dirt Devils, what you are seeing is the effects of publishers like Hi Torque trying to keep offensive material (yeah right) out of their mags. I forget who it was over at High Lifter, maybe Scott, that said they even edited the word Vampire once LOL. Next time you see a GBC ad for the Devils notice how Hi Torque blacks out the picture of the demon and the word "Devil".