I've been using Megs hyperdressing, just thought I'd give the #40 a try.
I've been using a paint roller to apply tire dressing (same roller head for a couple years, and it stays fairly saturated with the hyperdressing). Something like this size roller (3 or 4 inch long, maybe 1.5" diameter):
but a more absorbant nap rather than the dense synthetic shown in that pic. It might be cotton.
It's very quick to apply with a roller, and easily gets into the nooks and crannies of the edge tread and embossed writing on the tire, but it probably does waste more product than using a MF towel to apply it. I get fairly close to the wheel edge with the roller and use a cheap-o paint brush to get what the roller applied, up against the wheel edge.
Anyone else use a roller to apply tire dressing?
For the Megs #40 I'll probably just try a MF as someone suggested.