Wow what! I know I thought 2 cans would have done it, and maybe I could have touched up a few other areas in the car, but that was the final result with two cans. Obviously whatever they use isn’t up to quality of SEM. It’s weird they give you a can of SEM vinyl prep so why not their spray cans? I saw things about humidity but I live I Austin tx and was doing this in a closed garage. Should I not be?
I didn't even use the vinyl prep.
1 can of SEM black, some scotch brite, and a wash in soap/water prior to paint. It's been a year and it's held up wonderfully. No scratches at all, and I do use my cupholder.
I actually did a test paint on a spare console lid I had painting the underside and top, letting it dry and then scratching it up and it held. Only then did I do the LRS cupholder console. So less than 1 can of the SEM stuff painted the top and bottom of two of those consoles. I still have plenty of paint for other stuff...maybe it's less than 1/2 can but I could definitely paint a few small pieces with it.
Of course, I don't know if there would be any technical difference between the black and red. The black coated very thickly and dried in a matter of seconds VERY evenly. I didn't really need many coats.
As for humidity? I did it in winter when there wasn't any humidity.