If a funeral is to be conducted in a different city to the place of death, or even in another state, you may need to consider your options to transport the deceased. In the case of short distances, your funeral provider will usually be able to offer their services, often charged at an additional mileage rate.
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.. A typical passenger car tire has about twenty square inches of total footprint surface and begins with about 1/3 of tread depth.
However, what is also important is tyre mileage. With an average of around 27,000 miles per year, summer tyres should be replaced at three and a half years and winter tyres after a maximum of seven years (assuming that the tyres have only been used each winter).