I recently bought a set of Nokyen "N" tires based ...

I recently bought a set of Nokyen "N" tires based upon a recommendation from Brad Olson. He had them filled with nitrogen, which provides for less changes in tire temperature and pressure through out the season's. After driving for over 50 years, all I can say is this is without a single doubt the best riding tire I have ever experienced! I suggest you stop and shop with them since "customer service" is really their creed. They have been taking care of our cars for thirty years now.
and I have found that Brad, Dan, and their crew are always friendly professionals who really care about their neighbors. We live in Lake Oswego and cross the river because of the great people and service!