Why does one rear wheel of a car turn while the other doesn't?

[DiMichael]

This is a normal phenomenon and is not related to front/rear-wheel drive. The occurrence of this phenomenon is due to the function of the universal joint in the car's drivetrain system. The role of the universal joint is to transfer the remaining power to the other wheel when one wheel encounters resistance. The reasons why one rear wheel suddenly stops turning are as follows: 1. Reason one: In winter, do not pull the handbrake too tightly after washing the car, as this can cause the rear wheels to freeze, resulting in one wheel turning while the other does not. 2. Reason two: Neglecting regular maintenance of the wheel bearings can cause the bearing cage to deteriorate and seize the axle, leading to one wheel turning while the other does not. 3. Reason three: If the rear wheels have drum brakes, there are two brake shoes inside. When the inner brake shoe is severely worn and not replaced in time, it can cause the brake shoe to seize, resulting in one wheel turning while the other does not. 4. Reason four: If the rear wheels have disc brakes, check whether the brake fluid circuit is blocked, causing the caliper to seize the brake disc, resulting in one wheel turning while the other does not.

[Amanda]

I've encountered this situation before. It happened by chance after a long drive home. When I gently pressed the accelerator, I noticed one rear wheel turned normally while the other was stuck. This might be related to the differential, which is supposed to allow the tires to rotate flexibly at different speeds. However, if the gears inside are worn or locked, it can cause one wheel to stop working entirely. I don't think this is a minor issue because it affects turning stability and fuel consumption. If you suddenly experience this problem while driving, it's best to visit a repair shop promptly for safety reasons. They can easily test with tools to determine whether the differential itself is faulty, the connected half-shaft is loose, or the brake is stuck. Don't underestimate this issue—delaying repairs can significantly increase maintenance costs.

[AbelFitz]

My car had the same issue the other day—one rear wheel wouldn't budge while the other spun freely, which got me a bit nervous. After all, I just saved up to buy this used commuter car, and I'm worried about facing expensive repairs. The problem could stem from a few common culprits, like a worn-out axle failing to transmit power, or if the brake system is seized, it could lock the wheel in place. I tried putting it in neutral and pushing the car, and sure enough, the stuck wheel had resistance, indicating it's not normal differential behavior. This needs immediate attention—don't wait until it affects driving or causes a blowout. I'd suggest checking the simpler possibilities first, like whether the brake pads are jammed. If that doesn't solve it, take it to a reputable shop for diagnosis to avoid unnecessary expenses.

[ValentinaLynn]

As an amateur car enthusiast who enjoys DIY repairs, I often tinker with various minor issues. The phenomenon where one rear wheel turns while the other doesn't typically occurs due to differential failure or a broken axle shaft. When internal components of the differential age, they can no longer distribute power effectively, causing all the force to go to one wheel. If this happens during a test drive on a straight road, it's definitely abnormal. I recommend performing a preliminary inspection yourself: use a jack to slightly lift the vehicle and check if both wheels can rotate freely. If one is stuck, listen for unusual noises or feel the brake disc temperature to see if it's excessively hot, as these indicate braking issues or mechanical damage. If simple troubleshooting doesn't resolve it, stop driving immediately—safety comes first. The repair itself isn't overly complicated.

[PiperDella]

I found this issue could jeopardize the safety of the whole family, especially when picking up or dropping off kids. If the rear wheels get stuck, the vehicle may lose balance and skid, which is extremely risky. The cause is usually a locked differential or a broken driveshaft. I read in a book that this component is supposed to coordinate the wheels during turns, but if it's excessively worn, it fails. If you notice this, you should pull over immediately, turn on the hazard lights, and avoid driving further to prevent additional damage. Then, call a tow truck or contact a professional technician—they can diagnose the issue with specialized tools. Regular maintenance, including checking the tires and drivetrain, can prevent such problems. Don't risk major damage for minor neglect.

[Louis]

This phenomenon is mostly caused by a malfunction in the differential components, which I think deserves attention because it affects the overall performance of the vehicle. If the half-shaft is loose or broken, power won't be transmitted to the other wheel, and a stuck brake system could also cause similar issues. Try listening for any strange noises from the rear when driving at low speeds, as this can help with preliminary diagnosis. However, don't rely too much on self-diagnosis. I always recommend driving directly to a repair shop and having professional equipment test the differential and related circuits. This ensures a thorough solution and prevents sudden loss of control at high speeds. Spending a little money for safety is wise.