The BMW E91 318d may jerk when accelerating due to a few potential reasons. One common cause could be a malfunctioning fuel system, such as a clogged fuel filter or a faulty fuel pump, which can disrupt the flow of fuel to the engine. Another possibility is a problem with the transmission, such as low transmission fluid or a worn-out clutch, which can cause jerking during acceleration. Additionally, issues with the engine's ignition system, such as faulty spark plugs or a malfunctioning ignition coil, can also lead to jerking when accelerating. It is important to have the vehicle inspected by a qualified mechanic to diagnose and address the specific issue causing the jerking. **

There have been reports of ignition coil issues with the BMW 335xi E91, particularly in models manufactured between 2006 and 2013. Symptoms of a defective ignition coil may include engine misfires, rough idling, and a decrease in fuel efficiency. If you are experiencing these issues, it is recommended to have your ignition coil inspected and replaced if necessary by a qualified mechanic. **

Converting a BMW E91 to 6 cylinders would involve replacing the existing engine with a 6-cylinder engine. This would require sourcing a compatible 6-cylinder engine, along with the necessary wiring harness, ECU, and other components to ensure proper integration with the vehicle. Additionally, modifications to the exhaust system, cooling system, and other related components may be necessary to accommodate the new engine. It's important to consult with a professional mechanic or automotive specialist to ensure that the conversion is done safely and effectively. **

The warning light in the BMW E91 that looks like a yellow triangle with an exclamation mark inside is the Dynamic Stability Control (DSC) warning light. This light indicates that there is a problem with the DSC system, which helps to stabilize the vehicle during sudden maneuvers or loss of traction. When this light comes on, it is important to have the DSC system checked by a qualified mechanic to ensure the safety and stability of the vehicle. **

The high mileage of a BMW E91 318d can vary depending on the maintenance and driving habits of the owner. However, these cars are known for their durability and can often reach over 200,000 miles with proper care. Some owners have reported their E91 318d reaching 300,000 miles or more before needing major repairs. Regular maintenance and timely servicing can help ensure a longer lifespan for the vehicle. **

The main difference between the BMW E91 318i, 325i, and 335i lies in their engine sizes and performance levels. The 318i is equipped with a smaller, less powerful engine compared to the 325i and 335i. The 325i offers a mid-range engine with better performance than the 318i but not as powerful as the 335i, which boasts a larger engine and higher performance capabilities. Overall, the 335i is the most powerful and performance-oriented model among the three. **

For the BMW E91, a roof box with a size of around 450-500 liters would be suitable to provide ample storage space without obstructing the rear hatch. Some popular roof box options for the BMW E91 include Thule Motion XT, Yakima SkyBox, and SportRack Vista XL. As for roof racks, Thule and Yakima are reputable brands that offer roof rack systems specifically designed for the BMW E91, ensuring a secure and precise fit for your vehicle. It is recommended to check the specific compatibility of the roof box and roof racks with the BMW E91 model before making a purchase. **

For the BMW E91, a suitable roof box would be the Thule Motion XT Rooftop Cargo Carrier or the Yakima SkyBox Carbonite Cargo Box. These roof boxes offer ample storage space and are aerodynamic to reduce wind noise and drag. As for the roof rack, the Thule Aeroblade Edge Roof Rack System or the Yakima JetStream Roof Rack would be compatible with the BMW E91, providing a secure base for mounting the roof box. **