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.
Under-cabinet wine glass racks are also practical and space-efficient. They can be combined with a wine rack and integrated into the kitchen furniture. The glasses can be placed above the sink, making it easy to wash and dry them. This type of wine racks can be easily attached to the underside of the kitchen cabinets.