I'm not trying to diss car tires on a bike but I have seen videos of both on a bike and the contact area of bike tires seems to be greater.

It may not make much difference if you don't ride the twisty roads much .

I would need much more in the way of comparisons before I went to the darkside.

It's great to see the pioneering effort of the darkside enthusiasts. This may be just the push that tire manufacturers need to make improvements in bike tires