Salt on roads plays a key role in making winter driving safer by preventing accidents due to lost traction on slippery snow and ice. Salt lowers the freezing/melting point of water, making it a fast and inexpensive way to melt snow and ice on the road. The problem with salt on roads is that it is a highly corrosive element, which can be highly damaging to your vehicle.
Exposure to salt on roads throughout the winter is very hard on the metal components of your car. Most vehicles have an exposed underbody, so a great deal of salt damage occurs underneath the car, where it goes visually undetected. Rust on essential parts of your vehicle can leave you with huge problems ranging from brake system leaks to frame damage. While your rubber tires will suffer little or no damage from salt, your wheels are highly vulnerable, since the metal areas of your car are most at risk for damage from salt on roads.
The good news is that the coatings and paint finishes used in today’s automotive manufacturing do a much better job of protecting vehicles against salt damage. The process of salt leading to corrosion and rust takes awhile, you fortunately have time to undo salt damage potential.
The best way to protect your car from road salt corrosion is to take it to the car wash for regular washings during the winter months. How frequently your car should be washed will depend on how much salt and road sludge you drive through on a regular basis. If you have really expensive wheels, consider swapping them out in the winter months, since salt is especially damaging to chrome.
Waxing seasonally will make your washes more effective and provide additional protection for your vehicle.