I know, another crazy question. In looking at a pic of new stock Dunlop tires for the Blast I saw that the rear tire had a nice deep groove down the center of the tire, mine does not. I checked the arrow on the side of the tire and lined up with the center tread and the wear bar is showing basically the circumference of the tire. The front is fine and as far as the tread on either side of the center groove on the rear tire they are ok too. Planned on riding the Blast on a roughly 320 mile round trip to Mich. this coming weekend. In your opinions should I not ride it at all other than to get a new tire or take the trip?