The more conventional treatment would be to spell out "Fearstone" in white letters along the sidewall of the tire itself, just like every brand name of tires does. However, this would lend itself to a straight-on view of the tire, which is already mostly black and might not be distinct enough from the standard black Wacky border. So clearly the product itself poses some creative challenges, but I guess they liked the spoof enough to pull it off by whatever means necessary.