Lattimer and Bbob, why are you going to a car tire when the design parameters and characteristics are entirely different than what a motorcycle requires and it will devastate the handling capabilities? Is tire life more valuable than your life?
I have had this discussion hundreds of times with multiple different people on different sites. The right car tire works just fine. I've logged over 15,000 miles on car tires on my previous bike with no issues whatsoever. Rode in rain, wet, gravel, dry, had a sudden blowout....never once had any pucker factor at all from the tire.
The fact is that a heavy cruiser compresses a car tire such that the tire contact patch is always significantly larger than a motorcycle tire. That leads to better traction in all conditions, handling that is different, but not bad, and substantially increased tire life.
There is a community of long-distance riders with bigger bikes (Goldwings, VTX, Valkyrie, VN 2000, etc) who have done a lot of work figuring out the right tires to use.
Its not for everybody.....but I know it works fine for me.