I was just looking at photos, and after all this time and miles noticed the front tire rotation direction on the factory tire is different than the indication for present tire. I had to look in the HD web site to see the new ones are the same as my present tire per arrow indication. Per the arrow indications the tread patterns are opposing for the front and rear. I looked at photos of other guys bikes and their front tire is the same as my factory tire was. What is the simple explanation for this? Is there anything beyond traction or stopping issues regarding being mounted in the wrong direction. thanks.