I've been searching for a while for a towel that I liked for the wheels. The beauty of this one is that it has a softer, plusher side for the wheel face and barrel, then a shorter nap on the other side to wipe the tires. It also has a satin edge that makes it a little easier to hold. The finished edge will also aid in keeping the edges of the towel from snagging on lugs or valve stems.
I chose dark grey instead of black so you can still see the dirt, but it will be less likely to stain the towel. I use this on the wheels and tires, but you could certainly use it for many other applications.
All of the towels I use are the culmination of many years of trial and error. As I'm sure you know, microfiber towels aren't cheap. I'd be ashamed if I actually added up how much I spent to get to this point. I know I can save you a lot of time, energy, and money by giving you access to buy exactly what I'm using on my cars.
Number I have in my cabinet: 20.
Note: Since I buy in such volume, I'm able to get all of us better pricing than you'd get on your own. I sell these towels at the same price that you would pay if you bought them in bulk 25+.
420 GSM: This is the weight per square meter of material. The weight does not necessarily mean the thickness.