I've been using this type of brush for tire dressings. Considering the DF version is extremely expensive, especially in Australia, it took me a while to us it for this role. At the end of the day, it was sitting in the cabinet unused, and I really didn't have much use for it elsewhere, probably sacrilegious for such a nice brush.
The best thing about using this brush for tire dressing is that the soft, fine bristles negate the need to do a final knock back wipe with a towel, the brush finishes down so nicely. I would say that its best used with water-based dressings, a thick solvent dressing would be too thick and sticky for this brush. Also, I have found the brush washes out nicely in water, a little APC if you feel the need.
Since then, I have also found these Maxshine versions. On first glance, these look like a DF rip-off, but there is some innovation here. Maxshine offer three versions of this brush, the soft synthetic, a boars or mixed hair brush, and the changeable head version that allows the user to unscrew the bristle head from the handle and swap them out as needed.
The synthetic version works in a similar way to the DF, again, allowing the dressing to be evenly distributed and levels down superbly. I find the synthetic brush is ideal for tires of 40 profile and above, any lower and it tends to drag across the wheel face.
The mixed bristle version is usurpingly soft, way more than you would expect. The bristles are clustered much tighter than the synthetic brush, which would be better suited to low profile 30 and 35 profile tires as shown here in the photos.
Next on my list will be to use the synthetic brush on wheel faces. I typically don't use brushes for interior cleaning.
