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What Causes the Abnormal Noise When Turning Left in a BMW?

3 Answers
Jessie
07/29/25 11:31pm
There are many reasons for abnormal noise when turning left in a BMW, such as engine noise or transmission noise. The following are specific details: Engine Noise: Engine noise indicates that the technical state of a certain mechanism in the engine has changed. This is mainly caused by excessive wear of some parts or improper assembly and adjustment. Some noises may even warn of potential catastrophic damage to the engine. Therefore, when the engine produces abnormal noise, it should be repaired promptly to prevent further damage. Transmission Noise: The transmission has many components, and there are numerous reasons for noise. If the transmission noise is noticeable, it is recommended to send it to a professional repair shop to identify the faulty part and then replace it.
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McBriella
08/16/25 2:20am
Last time I drove my friend's BMW, I also encountered a left-turn noise issue, which turned out to be caused by aging chassis components. The most common cause is lack of lubrication in the outer CV joint, resulting in a clicking metal sound when turning. If the dust boot is torn, it must be replaced immediately; otherwise, sand getting in can damage the universal joint, leading to bigger trouble. Cracked stabilizer bar bushings can also cause squeaking noises when turning—these parts cost only around a hundred bucks, but labor fees are quite high. If the noise only happens when turning the steering wheel to full lock, it might be due to excessive gear clearance in the steering gear, which requires professional equipment for adjustment. Actually, aftermarket wheels can sometimes rub against the inner fender during turns if the camber angle is incorrect. I recommend getting it checked early—don’t be like my friend who waited until the CV joint completely seized, ending up spending nearly two grand on towing fees.
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LaEmilia
10/19/25 2:29am
I've been driving a 3 Series for over three years and experienced left-turn squeaking twice. The first time was in winter when going over speed bumps with a clunking sound. The inspection revealed that the lower control arm bushings had frozen, hardened, and cracked, causing direct metal friction during turns. The second time was a recent buzzing noise during the rainy season, which the technician attributed to aging seals in the power steering pump leaking oil, leading to insufficient oil pressure during steering. BMW chassis are particularly sensitive, with bushings typically lasting only five to six years. Rainy-day squeaking is mostly due to rubber component issues. Here's a small tip: if you notice more pronounced squeaking when turning with heavy items in the trunk, it's actually due to the rear suspension's load affecting the front wheel camber, indirectly causing steering system noise. Clearing out the trunk might just solve it.
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