I know that there probably were a variety of tires taht came on stock puch's over the years (right?) But the '77 Newport I just got has 386 miles on the odometer and I am curious if this is accurate. The bike doesn't start yet but the tires don't look too worn at all. They are Cheng Shin's (I think that's the name). I figure if these ARE the original tires then that 386 is probably correct. Ya feel me?