I have used the Erie WW. I felt it as one of the best out there. It was a PITA to modify an existing unit to accept a larger diameter Brush. I was able to get some machined pieces of steel 2" x 2" and about 6 inches tall. They bolted to existing bearing holes and bearings mounted to it to raise brush up and move it out from the frame. there were all sorts of consequential issues with the angle and height of bar that the tire pushed and adjusting stops.
Finally gave up on wheel brushes and now using filament on Bottoms of wraps, lower details and side wheels. (FWIW Ryan Essenberg of Tommy's does not use wheel brushes but has an expensive wheel cleaning unit better suited for Flat Belt conveyors but will also work on regular conveyors.) AFAIAC only(manual labor or) lots of High pressure which translates into $$ in terms of water and electricity will get really bad wheel nooks and crannies clean. However, things may be looking up for us. I was talking to another operator and he seemed to feel the particularly bad offenders seemed to be German cars, MB, BMX, VW and they may be moving to different brake material which isn't as big a problem. I think I have a video out there.