Serfas has some inverted tread tires you may like. I have 2 on my old cruiser, skinny up front for less gyroscopic resistance steering, and a fat one in back for maximum traction & cushion. You could put that skinnier one on both wheels and see how that feels, but be warned, they are not for off-road or gravel, just pavement. One huge bonus, is that they do have some grip pattern to it but they are very quiet vs normal treaded tires. Freedom also has some excellent choices to pick from in both slicks and treaded.

- Andy