The Tire Rack's advice is that if rain and wet roads are a concern, you should consider replacing your tires when they reach approximately 4/32 of remaining tread depth. Since water can't be compressed, you need enough tread depth to allow the rain to escape through the tire's grooves.
1. Remove your salmon from the freezer approximately 12 hours before you plan to cook it. For quantities over 1 lb. (454 g), remove the salmon 24 hours before you plan to cook it.. Put the bowl on a flat surface in the refrigerator, away from foods that will soak up the smell of the salmon. The refrigerator should be kept between 35 and 40 degrees Fahrenheit (1.7 to 4.4 degrees Celsius), in order to inhibit the growth of micro organisms.
Change the water every 30 minutes to keep it cold. A 1-pound package of meat may take less than an hour to defrost, while a large piece of meat, such as a whole turkey, will take about 30 minutes per pound. Once defrosted, cook the meat straight away -- don't store it in the refrigerator or refreeze it.