Your vehicle’s rear differential plays a crucial role in ensuring smooth, controlled driving, especially when turning or driving on uneven roads. What happens if it fails while you're driving? Even the idea can make any driver feel uneasy. Understanding how the rear differential functions, recognizing signs of failure, and knowing what to do if it goes out can help prevent costly repairs or dangerous situations. In this article, we’ll walk through the core function of a rear differential, common causes of failure, symptoms to watch for, the risks of driving with a damaged one, and what to expect in terms of repair or replacement costs.
The rear differential transfers power from the engine to the rear wheels while enabling them to rotate at different speeds—a function that’s essential when navigating turns. Without a functioning differential, both wheels would be forced to spin at the same rate, causing handling problems, tire wear, and potential damage to the drivetrain. In rear-wheel drive and all-wheel drive vehicles, the differential plays a vital role in ensuring smooth and safe operation, particularly under load or during cornering.
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