I did get a couple of interesting comments about the car tire last week. I rode over to Kimberling City to see someone. On the way I stopped at a station to return a phone call. A fellow Valk rider came walking up to see my Interstate. About ten feet away he says, "What the h*** kind of rear tire is that?" He proceeded to talk about remembering some guys he knew running Volkswagen tires on older Wings, but said he'd never heard of putting one on a Valk. I gave him the forum's web address. He wanted the tire information. Good visit with a Valk rider.
While in Kimberling City I had a guy walk up and say, "Hey you know that thing won't go around corners with that tire on it?" Then he told me he has a 1100 Shadow that he runs a car tire on and has for about 25k. He said he gets that from people all the time.
So far the experience has been good, but it is certain that the car tire gets a reaction. Some good and some bad. I'm not all that concerned with the comments - but am working on my opinion based on experience and research. Like I said, so far so good.

Al