All but ONE of the above replies are correct.

 

@ Quiet Thunder

Any particular reason you chose a winter tire?

 

I have been running a car tire on my electraglides for a number of years, I have a 14 limited with progressive suspension. One of the main reasons I run it is because of the ride. 100% improvement, my wife won't ride on the bike anymore without one . It will be the most amazing improvement to the ride you can ever make.

 

What size/brand?

 

The tire i'm running right now is a Yokohama Avid Envigor run flat. 195/55R16 and I absolutely love it. I have ran 205/55 R16 in the past and they fit just fine. I just bought the 195 because it was available.
I have used Michelins and Bridgestones before but always run flats because of the safety factor.
I got a good chuckle out of the non-darksider offering advice on this topic as well.
You will find all the nay sayers have never tried it but are quick to offer up their expert opinion.