I know this doesn't look like much, but this is one of my favorite tools in the garage. The design, size, bristle stiffness all just make simple sense. I use this brush in combination with Adam's Tire & Rubber Cleaner to keep my tires dialed in.
Most of my cars have lower profile tires and not a whole lot of fender gap. I don't want my tire brush hitting the lip of the wheel or the paint on my fender. The size of this brush allows me to get the tires, but miss those important areas. But it still does well enough on my larger Raptor tires.
There really isn't much else to say. This just works and works well.