Ron,
I have done 2 track days on the R65 Dunlops and about 150 road miles . About 50% worn . For the road I normally run 225/50/15 Z rated G Force fronts and 305/50/15 Goodrich TA on the rear.The Dunlops are good for 10 seconds a lap at Thunderhill and are superb track tires but will follow the slightest road bump on the road. But.....oh yeah !
Graham W