Tron, I confused the peel and stick weights with the extended tab Cadillac weights.
You're right about the hubcaps. Whenever I have new tires installed, I remove the caps at my house and then go to the tire place. I take needle nose pliers to re-bend all the tangs to make sure they grab tightly.
So, in regards to AD Trucks, the peel and stick weights are nice because they can be put anywhere on either side of the rim and don't detract from the look of the wheel.