I like to use the tire shine with a brush sprayer attachment. It helps get a even coat on the tire compared to just spraying it on. I think any thing that has a timer and
coin mech can be converted to a tire shiner for very little money. Old fragrance machines are a good candidate. I have a vac/frangrance combo that never sold much fragrance at all. I may convert it over.
I just used the tire shine on a atv with a lot of black plastic. Makes them look brand new. With as many ATVs as I get at the washes I will be demonstrating the machine to them. I think they might end up being the biggest users. I might change the decals to say tire/ATV shine.