Most people only replace a broken or burnt-out lamp. But like socks and shoes, your headlights are always better changed in pairs. Replacing just one failed lamp can result in an unbalanced or unpredictable headlight beam that can cause serious hazards for you and other drivers. Your car is designed so that it works best when both lights are functioning equally. Only then will you get the full advantage of the combined headlight beam.
Automotive professionals unanimously recommend that important auto parts are replaced together. Brakes, shocks, wiper blades and, of course, lights should always be replaced in pairs. After all they are all subjected to the same stresses over the same amount of time. It’s also important to consider the environmental impact. Not only is it unsafe to drive with unequal headlights, if one lamp burns out, the other is sure to follow soon – and that means fuel and time for two trips to the garage for repairs instead of one.
• For you as the driver, the road will not be properly lit.
• For oncoming motorists, your car will be harder to see. A seriously unbalanced light could have you mistaken for a motorcycle, with serious consequences.
• Both lights are subject to the same stresses, so they’ll both be deteriorating together. Don’t make the mistake of changing just one light while the other is nearing the end of its lifespan. What’s more, you’ll save yourself another trip to the garage or retailer.