Can't tell a lie I detail my tires about once every three months. I like a deep matte black that looks like there's nothing on a brand new set of tires. I've been using Griot's Garage Black Satin Tire Coating, sprayed on and the brushed in. Looks like there's nothing there. Deep matte black. Doesn't run when it rains, doesn't sling off onto the paint, lasts for months and doesn't turn brown.
I really want to downsize my wheels to 15x8 from the PO installed 15x10.