What is the tire model of the BMW 740?
4 Answers
The tire model of the BMW 740 is 245/50R18. The first number 245 represents the tire width of 245MM, 50 indicates the aspect ratio of the tire section is 50%, meaning the section height is 50% of the width, the letter R stands for radial tire, and 18 represents the rim diameter of 18 inches. The BMW 740 has a top speed of 235km/h, accelerates from 0 to 100km/h in 7.8 seconds, and has a fuel consumption of 7.5L per 100km. In addition to the model, the tire also displays the following common data: Tire cord material: Indicated by Chinese pinyin, such as M-cotton cord, R-rayon cord, N-nylon cord, G-steel cord, ZG-steel radial cord tire. Speed rating: Indicates the maximum speed at which the tire can carry a specified load under defined conditions. Letters A to Z represent certified speed ratings ranging from 4.8km/h to 300km/h. Common speed ratings include: Q: 160km/h; H: 210km/h; V: 240km/h; W: 270km/h; Y: 300km/h; Rim specification: Indicates the rim size compatible with the tire for practical use, such as "Standard rim 5.00F".
I've been driving a BMW 740 for a short time, and its standard tire size is usually 245/45 R18, designed for rear-wheel drive. However, this may vary depending on the year or configuration, such as some high-end versions using 19-inch rims. Tire size is crucial as it directly affects driving handling and comfort. From my experience, using factory specifications provides better stability during high-speed cornering and reduces the risk of skidding. I recommend tire brands like Michelin or Bridgestone, which are durable and quiet. I've also found that regularly checking tire pressure and maintaining it around 2.2 Bar can extend tire life. It's essential to inspect tread wear at least once a month. The BMW 740 weighs approximately 2 tons, so tires wear out faster than those on smaller cars, requiring replacement every 3 years or so. Winter tires are especially necessary during rainy or snowy seasons to improve traction. During routine maintenance, it's good practice to clear stones from tire grooves to prevent accidental sidewall damage. With this comprehensive care, driving becomes safer and more worry-free.
I've been driving my BMW 740 on long-distance trips for many years. The original tire size is usually 245/45 R18, which offers a balanced performance—providing a smooth ride without excessive vibration and maintaining reasonable fuel efficiency. When selecting tires, pay attention to brands like Continental or Pirelli, which are designed for luxury cars and offer better noise reduction. The tire specifications must match the manufacturer's requirements; otherwise, it may affect the vehicle's balance and odometer readings. I personally check the tire pressure every six months, maintaining it around 0.2 for optimal performance. If the tread wear indicators reach a depth of 2mm, it's time to replace them to prevent hydroplaning accidents in rainy conditions. For cars like BMWs, which are often driven in urban areas, tires tend to wear unevenly on the edges, so regular tire rotation can extend their lifespan. Also, be mindful of seasonal changes—for example, avoid prolonged exposure to high temperatures in summer, as rapid tire pressure increases can affect traction. In short, careful maintenance can help reduce additional repair costs.
My BMW 740 uses standard tire specifications of 245/45 R18, which affects safety performance. Tire size must be precise; otherwise, braking distance increases, especially on slippery roads where loss of control is more likely. It's recommended to use all-season tires to adapt to different weather conditions. For example, switch to winter tires in snowy conditions to enhance grip. Regularly checking tire pressure and wear is crucial. If the tread is shallow, replace the tires immediately to avoid risks. Due to the BMW's heavy weight, tire pressure imbalance occurs quickly, so it's advisable to measure it every time you refuel. In daily driving, try to avoid sudden braking to reduce wear speed. Choosing reliable brands like Goodyear or Dunlop can improve overall stability.
