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What is the wheelbase of the BMW 3 Series?

2 Answers
Pluto
07/29/25 4:44am
BMW 3 Series long-wheelbase version has a wheelbase of 2920mm and a body length of 4720mm. It is a modified version of the original 3 Series with an increased wheelbase of 110mm and a corresponding increase in body length by 110mm, designated with the tail badge 3xxLi. Below is relevant information about wheelbase: Design perspective: Wheelbase is a crucial parameter closely related to a car's performance. It determines the position of the car's center of gravity. Therefore, any change in wheelbase necessitates a complete redesign of the overall layout. Practical use: The length of the wheelbase directly affects the car's overall length, which in turn impacts the internal space utilization.
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VonDaisy
08/12/25 8:25am
I've driven several BMW 3 Series models and remember their wheelbase being around 2850mm. This size makes the cabin particularly spacious, especially with ample rear legroom – no one complains about being cramped when traveling with friends or family. Compared to my previous Mazda 3, which had a much shorter wheelbase, the rear seats felt noticeably more confined. BMW designers struck a good balance – the slightly longer wheelbase doesn't compromise handling. Daily driving feels stable when cornering, and the body stays composed during highway trips. The only minor issue is needing extra caution when parallel parking in cities due to the increased length – it might take a few more steering adjustments. Overall, the wheelbase significantly impacts comfort and driving experience, and the BMW 3 Series executes this well, making it suitable as a family car or commuter vehicle. I recommend testing the rear seat space yourself when car shopping.
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Are Motorcycles Allowed on Elevated Roads?

Generally, motorcycles are not allowed on elevated roads, but they can be driven on elevated overpasses where there are no specific prohibitions against motorcycles. The 'Road Traffic Safety Law of the People's Republic of China' does not explicitly prohibit motorcycles from entering elevated roads. Whether motorcycles are allowed on elevated roads depends on the relevant regulations of the local traffic authorities. Precautions for motorcycles on highways: Motorcycle riders must wear helmets and are not allowed to carry passengers or cargo. The speed of the motorcycle should not be lower than 60km/h and not exceed 80km/h. Motorcycles must keep to the right side of the road. Only medium to large displacement motorcycle models are allowed on highways. Hazards of riding on elevated roads: Driving a motorcycle on elevated roads is much more dangerous compared to other road sections. This is because the speed of other vehicles on elevated roads is faster, and even a slight lapse in attention can lead to scraping accidents.
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What is the reason for the abnormal noise when stepping on and releasing the clutch?

The reason for the abnormal noise when stepping on and releasing the clutch is the lack of lubricating oil in the return spring of the clutch pedal. The working process of the clutch involves the following three points: Working process: The diaphragm spring is installed between the clutch cover and the pressure plate, creating a pre-compression deformation that generates pressure on the pressure plate, pressing the driving and driven parts of the clutch together, i.e., the clutch is in the engaged state; Separation process: When the clutch pedal is depressed, the pedal moves left, pushing the push rod left, which through the cylinder and working cylinder, moves the diaphragm spring separation plate left. This causes the diaphragm spring to pivot on the support pin fixed to the clutch cover, moving the large end to the right while pulling the pressure plate right via the separation plate; Engagement process: Releasing the clutch pedal returns the pedal to its original position. The movement of the engagement mechanism is the reverse of the separation process. When a preset gap appears between the release bearing and the diaphragm spring separation plate, and the diaphragm spring re-presses the pressure plate against the driven plate, the engagement process ends, and the clutch resumes its power transmission function.
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How often should a car be started if it's not driven for a long time?

It is recommended to start a car every two weeks if it's not driven for a long time. Here are some tips about long-term car storage: Recommendation to start every two weeks: This prevents the lubricants in the vehicle from affecting the car due to prolonged inactivity. When a car remains unused for extended periods, most of the lubricant that should be coating the moving parts will flow back to the oil pan due to gravity, reducing lubrication effectiveness at various moving components. Additionally, the battery may lose charge, causing sulfation of the plates and shortening its lifespan. How to store a car for long periods: Before parking the car, both the exterior and interior should be thoroughly cleaned. Applying wax or a protective coating can help prevent paint corrosion. If possible, store the vehicle in a garage. If parked outdoors, at least use a car cover to protect against sun, rain, and debris like fallen leaves that can damage the paint. For vehicles parked long-term, avoid engaging the parking brake too tightly. The brake system can chemically react with moisture and oxygen in the air when idle for long periods, combined with rainwater erosion, causing rust on brake discs and pads. If they stick together, this can impair braking performance and may lead to wheel lock-up upon restarting.
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What are the early signs of a transmission failure in the Captiva?

Early signs of a transmission failure in the Captiva include transmission fluid leakage, engine stalling when shifting gears, and transmission lock-up. Here is the relevant information: 1. Signs of transmission fluid leakage: Difficulty in starting, especially in low gear. When pressing the accelerator during driving, the engine RPM increases, but the vehicle hardly moves, as if it's not in gear. This could indicate transmission fluid leakage. 2. Engine stalling when shifting gears: This might be caused by a damaged lock-up solenoid valve or a stuck control valve. This condition can lead to repeated engine stalls when shifting gears. In such cases, check if the gear engagement impact is strong. If it is, call for roadside assistance immediately. Otherwise, repeated attempts to operate could turn a simple valve replacement into a major transmission overhaul, which is not worth the cost. 3. Transmission lock-up: Incorrect input and output signals from the transmission, or malfunctions in components or wiring, and sometimes communication issues between the transmission computer and other systems can cause this. Once this occurs, it puts the driver in a dangerous situation—unable to slow down sufficiently in urban areas or accelerate properly on highways, increasing the risk of accidents.
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Will the insurance company compensate if the car is washed away by rainwater?

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How to Correct the Car Head Tilting to the Left When Reversing?

When reversing with the car head tilting to the left, turn the steering wheel to the right. Here are some precautions for reversing: 1. Reverse from the left side: Try to choose to reverse from the left side as it facilitates observation for the driver. During the reversing process, first look behind, then pay attention to the side mirrors. 2. Observe the rear situation: Before reversing, clearly see the situation behind the car, estimate the reversing route, and determine whether the car head will hit obstacles during the process. Especially when the steering wheel is turned significantly, the turning radius of the car's steering wheels is larger than that of the rear wheels, and the outward swing of the car head during reversing is also greater. At this time, special attention must be paid to avoid scraping the car head.
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