How much higher is the fuel consumption when changing from 235 to 245?

[OElle]

Changing from 235 to 245 increases fuel consumption by 0.5~1L per 100 kilometers. Advantages of wider tires: More stylish, wider tread, better grip, improved resistance to lateral forces; enhances driving stability, more stable handling, and better maneuverability in turns and braking. Disadvantages of wider tires: Increased friction area leads to higher resistance, slower acceleration, and higher fuel consumption; heavier steering feel and more tire noise. Advantages of narrower tires: More cost-effective, faster acceleration, quieter operation, and better fuel economy. Disadvantages of narrower tires: Poorer grip, less outstanding braking performance, and lower comfort.

[SanEden]

I previously changed my car's tires from 235 width to 245, and I clearly noticed an increase in fuel consumption. After driving for a month or two, mainly in the city and on highways, I recorded the fuel consumption gauge, and on average, it increased by about 7 to 10%. The wider tires do provide better grip, making turns more stable and reducing skidding in rainy conditions, but the increased resistance leads to higher fuel consumption. I recommend paying attention to tire pressure after the modification—don't let it get too low, or fuel consumption will rise even more. Driving habits also have a big impact; rapid acceleration consumes more fuel. If you're on a tight budget, it's worth weighing the trade-off between safety and fuel efficiency.

[LaIvan]

Changing tire width affects fuel consumption mainly due to increased rolling resistance. Going from 235 to 245 adds 10mm in width, resulting in greater friction that requires more engine effort, naturally leading to higher fuel consumption. From my personal car modification experience, such changes may increase fuel consumption by 5-10% overall, though many factors come into play - like your chosen tire tread pattern or whether you drive gently or aggressively. Don't overlook tire pressure either; maintaining recommended values can help mitigate some impact. Wider tires offer multiple benefits - cooler appearance, improved high-speed stability - just be prepared for slightly higher daily fuel costs.

[VonHailey]

Changing the tire width from 235 to 245 increases rolling resistance, which typically raises fuel consumption by around 10%. I've personally made this modification and noticed it feels more fuel-thirsty, especially in congested urban traffic. Contributing factors like low tire pressure can worsen this effect; highway driving shows slightly better balance. Regular tire condition checks are advised—safety comes first, and slightly higher fuel consumption is acceptable.