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.
Unopened Wine. Unopened wine should not be refrigerated in a standard kitchen refrigerator, which is too cold for long-term wine storage. Unopened wine should be stored on its side in a cool, dry place or in a special wine refrigerator. Opened White Wine. Opened white wine is best kept in the refrigerator. It should be recorked, preferably with a device that removes excess air from the bottle, and placed in the refrigerator. Though the flavor will start to deteriorate slightly after only one or two days, white wines usually remain drinkable for up to six days.