Check with your local Department or Ministry of Transportation office to see if the use of tire chains is legal in the region through which you are planning to drive. Check tire pressure and if necessary restore it to levels recommended by the tire manufacturer. Do not mix radial tires with other types. Check tire balance and correct if necessary. Check wheel alignment and correct if necessary.
Exhaust system Check the exhaust system for leaks.
A properly sealed exhaust system reduces the risk for carbon monoxide poisoning. Keep the window in your vehicle slightly open when you're stuck in snow, and run the engine and heater to keep warm. Keep the exhaust pipe clear of snow. A blocked pipe can force carbon monoxide back into the car interior. Ensure that your vehicle always has a sufficient amount of antifreeze rated for the coldest weather.