EZ Detail has now released the Go EZ Detail Brush for areas that require a stiffer brush when cleaning. The Go EZ Detail Brush has a thicker stem than the original EZ brush. This added rigidity makes it perfect for cleaning the outside of wheels, tires, bumpers and other hard-to-reach areas of your vehicle. 
The Go EZ brush still uses the same soft Nylon Nylex bristles, which will not scratch any coated, painted, polished, plated, or blank metal surface. Each bristle has a unique, multi-edge structure that provides excellent cleaning power, and the bristles bounce back to their original shape after each use.
The synthetic bristles are chemical resistant, so feel free to use your favourite wheel cleaner.
 
Features:
Clean wheels, wheel wells, spokes, engine bay, and more
Works great with soap and water or a wheel cleaner
Unlike other brushes it can clean in between the spokes and the face of the wheel