I just had a new Dunlop RS 3 mounted on the rear. When I got home I checked the build date 5217. Is that a little too old for a new tire? I don`t think I`ve had one that old before , but I just started checking dates about 10 years ago. It will last me a couple years I hope. I have been using Michelin PR 4 GTs for some time and get about 9500 miles out of them. And yes I do like to twist the throttle and my girl friend rides at times. Any feed back would be appreciated, thanks . Floyd