The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test track. A tire graded 200 would last twice as long on the government test course under specified test conditions as one graded 100.
Most wine racks are designed to allow a wine to be stored on its side. The thinking behind this orientation is that the cork is more likely to stay moist and not dry out if it is kept in constant contact with the wine. Some wineries package their wines upside down in the box for much the same reason.
The coil is at the bottom of the tank, providing a nice warm vapor, with a excellent flavor, and eliminates wicking problems. To fill the eVod unscrew the bottom coil. Hold the tank upside down and fill with approximately 1.5-1.7ml of liquid. While it is still upside down screw the bottom back on the clearomizer.