How much higher is the fuel consumption when changing from 235 to 245?
4 Answers
Changing from 235 to 245 increases fuel consumption by about 6 units. Here are some methods to reduce fuel consumption: 1. Close the windows: Driving with windows open increases wind resistance. The greater the wind resistance, the more resistance the car encounters, requiring more power and thus increasing fuel consumption. 2. Regularly maintain the vehicle or perform inspections: Timely oil changes can reduce carbon deposits (carbon deposits can cause uneven ignition, sluggish acceleration, increased fuel consumption, and in severe cases, even cylinder misfires). 3. Replace fluids on time: If the oil is not replaced promptly, the car's shaking will become more noticeable, and fuel consumption will also increase.
Changing tire width from 235 to 245 does indeed increase fuel consumption slightly. In my years of car enthusiasm, I've seen many such cases. The main reason is that wider tires increase rolling resistance, making it harder to move forward – just like dragging something heavier. This effect is especially noticeable at highway speeds due to increased air resistance. Typically, fuel consumption rises by 1% to 5%, depending on your driving habits, vehicle model, and road conditions. For example, stop-and-go city driving might increase consumption by 2-3%, while steady highway driving shows a smaller impact. I recommend doing actual measurements or checking forums for your specific car model, as factory designs carefully balance these factors, and modifications can affect overall efficiency. Additionally, wider tires add weight, which may slightly reduce acceleration feel, though they do improve grip and make daily driving more stable. Don't underestimate this change – the extra fuel costs add up over time, so carefully weigh the pros and cons before making modifications.
As an average car owner, I've done the math: switching from 235 to 245 tires may increase fuel consumption by 2-3%. Assuming original consumption was 10L/100km, the change adds 0.2-0.3L/100km. Driving 15,000km annually with fuel at 8 yuan per liter means spending 240-360 yuan more per year. Plus, new tires are more expensive and may wear faster, increasing overall costs. A friend who made this change measured a 3% fuel increase and regretted it, especially in city traffic. I advise against following trends blindly - if it's just for looks, you're better off saving the money for fuel. Higher consumption also affects maintenance intervals, with faster tire wear requiring more frequent care. Sticking with original sizes saves money and hassle, with no driving issues to report.
After upgrading my tires to 245, I feel the grip has improved, and cornering is more stable, but fuel consumption has indeed increased. Last time on the highway, I noticeably burned more fuel, roughly about 3% more. In the city, acceleration feels a bit slower, and I visit the gas station more frequently. From my experience, increased width means more resistance, like walking in wide shoes takes more effort. The change in fuel consumption varies by person—aggressive driving might increase it by 5%, while smoother driving less. Related points: Wider tires slightly reduce comfort and increase noise, but safety improves. I suggest test-driving before deciding—don’t just rely on data.
