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.
If you find yourself in said situation, you can still drink your wine. Luckily, itâs reasonably tolerant to freezing, so just let the bottle thaw in the fridge, and drink it as soon as you can. When a bottle freezes, a couple things can happen. For one, the cork is likely to be pushed out as the wine expands, so if you donât drink it right away, air can creep in through the cracks and oxidize the wine, turning it to vinegar over time.