I just replaced the combination street/trail tires that came standard on my comfort bike with a set of pure street tires (Serfas Drifter Dual Sport - http://www.serfas.com/tires/CTR-26.html ). It was only after I installed the tires and put the wheels back on the bike that I noticed the orange label with the manufacturer name and tire model was on the left side of the rear tire and on the right side of the front tire. This got me thinking that maybe the tires are supposed to go on with a certain orientation with the label on the same side of the front and rear. I carefully looked all around both sides of the tires and couldn't find any type of directional arrow indicating tire rotation direction. Also, the tread on these tires is perfectly symmetrical--looks the same from either direction. Given this, is it perfectly fine to leave the tires as they are, or do all tires have a certain orientation and should be mounted accordingly?