I have many miles on the Darkside. I wouldn't want it on a sport bike, but on the VTX, I wouldn't be without it. Some do it for the cost, some for the handling, and some are just wanting to try something different. There are a few who have gone back to MC tires, but not many. There are still some who say we will all die in a nuke meltdown for running a car tire. So far the only major difference I know of, is that I have been told that I kick up a huge rooster tail in heavy rain, I run the Hydro Edge, The bike takes the road better than it did with the stock tire, so I see no reason to fix what is working for me. If the car tire had a major handling problem I would have noticed it by now.