I had a set of HoHo radial wets, and used them 2-3-4 times a season until they were less than 1/8" tread. At that point, they were miserably hard and didn't grip in the rain, but would overheat and get greasy the second the track started drying. I threw them away. (well sorta. they're sitting in the driveway waiting on the HOA inspector to drive by and leave me a nasty-gram...)

BFG also now offers a rain tire, which is an R-compound version of their KDW street tire. I don't plan on keeping the car long enough to need another set of rain tires, but if I do that will be my next option.
http://www.philstireservice.com/bfgo...g-force-kdw-r/