What are the common reasons for a sedan's rear wheel not turning?
4 Answers
The common reasons for a sedan's rear wheel not turning are usually due to a seized rear wheel bearing or the right rear brake pad not retracting properly, which can also cause this phenomenon. Below is relevant information about automotive brakes: 1. Introduction to Brakes: Braking, also known as deceleration, refers to the action of stopping or reducing the speed of moving locomotives, vehicles, other transport tools, or machinery. The general principle of braking involves fixing a wheel or disc on the machine's high-speed shaft and installing corresponding brake shoes, bands, or discs on the machine base to generate braking torque under external force. The braking device, also known as a decelerator, is a mechanical device that can slow down the vehicle's speed. 2. Classification of Brakes: Drum brakes (advantages and disadvantages), disc brakes, etc.
There could be several common reasons why the rear wheel isn't turning. The most frequent issue is a stuck braking system, such as a seized brake caliper or locked brake disc, preventing the tire from rotating. Another possibility is a drivetrain malfunction, like a broken half-shaft, differential problem, or damaged drive shaft in rear-wheel-drive vehicles. Additionally, a damaged bearing is a common factor, which can cause the tire to jam or produce noise. Suspension system issues, such as deformed control arms, may also affect rotation. I recommend starting with simple checks: shake the tire to see if it's loose and listen for any unusual noises. If that doesn't help, it's best to take it to a professional repair shop promptly to avoid potential hazards on the road. A locked tire is not only dangerous but can also damage other components like the tire tread or suspension. Regular maintenance, including brake and drivetrain inspections, can effectively prevent such issues, saving you from costly and time-consuming major repairs. Never ignore minor noises, as delaying repairs can lead to higher costs later.
My car had a similar issue before, where the rear wheel suddenly stopped turning. It turned out the brake caliper was rusted shut, especially prone after rainy days or prolonged parking. It could also be due to aging drive shafts causing power transmission failure. Or sometimes the tire itself gets jammed by a rock or other debris in the wheel well. Another possibility is severely worn bearings causing the tire to lock up. I learned my lesson and now always remind the technician to check these points during maintenance. Parking in dry areas helps prevent rust. If you notice anything unusual, don’t force the car to move—it could damage the chassis or tires. Timely action is crucial. I spent a few hundred dollars fixing the brake system back then; delaying could’ve cost more. Remember, safety first—don’t cut corners by ignoring it.
The root cause of a non-rotating rear wheel is usually a mechanical issue. For example, brake system jamming, commonly seen in older vehicles, where gaps between brake pads and discs cause locking. In terms of the drivetrain, damage to the half-shaft or differential can interrupt power transmission. Bearing failure can significantly increase tire friction, preventing rotation. Misaligned suspension links may also indirectly cause the problem. I recommend first visually inspecting the tire for obvious foreign objects or deformation, then checking simple components like brakes and bearings. Developing regular maintenance habits, such as cleaning the brake system every six months, can reduce unexpected issues. Ignoring the problem may lead to greater losses, such as tire blowouts. Once towed to the repair shop, mechanics can quickly identify the issue with a lift.
