What Causes the Jerking Sensation in BMW 7 Series at Low Speeds?

How to Dispose of Old Tires Replaced from a Car?

Old tires replaced from a car can be sold as scrap. Here are some daily maintenance methods for tires: 1. Regularly check tire wear: Car tires can generally travel 50,000-100,000 kilometers, so it is necessary to regularly check the wear condition of the tires. If the wear is severe, the tires need to be replaced. 2. Frequently clean the tires: If the tires travel on muddy roads, they will accumulate a lot of dirt. Too many impurities on the wheels can affect driving safety, so when washing the car, the tires also need to be cleaned thoroughly; otherwise, the wheels will wear out faster. 3. Perform four-wheel alignment: Four-wheel alignment can improve tire performance and ensure normal vehicle handling. Poor wheel alignment can lead to irregular tread wear and shorten tire life. 4. Regularly check inflation and stabilize tire pressure: The wheels bear the weight of the car body, and the pressure of all four wheels needs to be consistent. Otherwise, the steering wheel may become unstable. Therefore, ensure proper inflation and stable pressure.

8

1

Share

How many subjects are there in the driving test now?

The driving test consists of four subjects. The content and passing standards of the test subjects are unified nationwide, and the test sequence is carried out in the order of Subject One, Subject Two, Subject Three, and Subject Four. Only after passing the previous subject can you proceed to the next subject. Introduction to the driver's license: The full name of the driver's license is the motor vehicle driver's license, also known as the "driver's license," which is the certificate required by law for motor vehicle drivers. Test content: The test subjects include traffic regulations and related knowledge, field driving, road driving, etc. The order of the test subjects is traffic regulations and related knowledge (referred to as Subject One), field driving (referred to as Subject Two), and road driving (referred to as Subject Three). During the test, if you fail the previous subject, the following subjects will not be conducted. Each subject has two chances to take the test. If you fail both times, the current test will be terminated.

19

4

Share

Is 95 Octane Gasoline Mandatory for Turbocharged Engines?

Turbocharged engines do not necessarily require 95 octane gasoline. Here are the relevant details: 1. Requirements: German brand turbocharged engines generally recommend using 95 octane gasoline, while other brands do not impose strict requirements. Vehicle owners can check the instructions on the inside of the fuel tank cap for specific details. The gasoline requirement for an engine is determined by its compression ratio. Typically, engines with higher compression ratios require higher-octane gasoline to withstand greater pressure and prevent knocking. Air entering a turbocharged engine undergoes an additional compression stage via the turbocharger, resulting in a larger compression ratio. In theory, higher-octane gasoline is indeed preferable. 2. Gasoline Differences: The main difference between 92 and 95 octane gasoline lies in the varying proportions of heptane and isooctane. 92 octane gasoline contains 92% isooctane and 8% heptane, while 95 octane gasoline contains 95% isooctane and 5% heptane. The differing ratios of heptane and isooctane directly affect the anti-knock properties of the gasoline. The octane rating actually represents the anti-knock performance, with higher numbers indicating better resistance to knocking.

17

2

Share

What are the new driving test regulations in Xiangyang effective August 1st?

Xiangyang's new driving test regulations effective August 1st are as follows: 1. Candidates must complete the required training hours and content before taking the test. Starting from August 1st, driving school training hours will serve as the basis for applying for the driver's license test. All 58 Auto candidates must complete the specified training hours and content before they can participate in the driver's license examination organized by the vehicle management department of the public security bureau. 2. Those who fail to meet the requirements cannot take the test. Candidates who do not meet the specified requirements will not be able to schedule the corresponding subject tests. The new regulations in Xiangyang effective August 1st include the following additional contents: 1. Candidates must complete the required training hours. Candidates need to select a theoretical teaching operator through their driving school and complete the required training hours on the operator's website. 2. Driving schools must install timing training systems. Timing training systems and onboard terminal equipment will be gradually installed in driving school vehicles.

20

4

Share

What is the fuel consumption of the Roewe ei6 hybrid?

The comprehensive fuel consumption given by the Ministry of Industry and Information Technology is 1.5(L/100km). More details are as follows: 1. Configuration: The Roewe ei6 is based on the Roewe i6, but features a larger trapezoidal front grille, a redesigned front bumper, and hybrid-specific badges on the front fenders. The top-of-the-line Roewe ei6 boasts a rich array of features, including Alcantara seats, dual-zone automatic air conditioning, heated front seats, an electronic parking brake, a 12-inch full LCD instrument panel, ambient lighting, and an auto-dimming rearview mirror. 2. Powertrain: The new car is equipped with a plug-in hybrid system consisting of a 1.5T turbocharged engine and an electric motor. The 1.5T engine delivers a maximum power of 124kW (169PS) and a peak torque of 250N·m, with a fuel consumption of only 1.3L per 100 kilometers.

11

0

Share

Can a small tire bulge be repaired?

It can be repaired, but it is recommended to directly replace it with a new tire. Even if the tire bulge is repaired, there is still a risk of tire blowout. A tire bulge occurs when the cord layer on the sidewall of the tire is damaged. It's important to know that this layer supports the entire tire's expansion and contraction. Once the steel wires inside are broken, the tire loses its protection, making it highly susceptible to blowouts. Below are the reasons for tire bulges: 1. Tire aging: If a tire is used for too long and exceeds its warranty period, it may age. Hitting a stone or speed bump while driving can cause a bulge. 2. Excessive tire pressure: Overinflated tires reduce the contact area with the ground, leading to premature wear. During use, rapid acceleration or poor tire heat dissipation can cause the tread temperature to rise, resulting in a bulge. If your tire has a bulge, it is advised not to continue using it. A bulged tire cannot be repaired or patched because the cord layer inside may have fractured. Even if repaired, the bulge may reappear after some time, posing a serious risk of blowout and creating significant hazards for vehicle operation.

11

2

Share

What Causes the Jerking Sensation in BMW 7 Series at Low Speeds?

How to Dispose of Old Tires Replaced from a Car?

How many subjects are there in the driving test now?

Is 95 Octane Gasoline Mandatory for Turbocharged Engines?

What are the new driving test regulations in Xiangyang effective August 1st?

What is the fuel consumption of the Roewe ei6 hybrid?

Can a small tire bulge be repaired?

How many hours after drinking beer can you drive?

Is it normal for the engine to start at high RPM in summer?

How to Check the Remaining Urea Level?

What is the difference between 0W20 and 0W30?