Question 4783
If tire inflation pressure is lower than recommended, does fuel consumption increase?
- Yes, because there is greater friction with the road surface.
- No, as long as the pressures are balanced across all of the vehicle's tires.
- Yes, and wear is also greater in the center of the tire tread.
Show answer and explanation
Correct answer: Yes, because there is greater friction with the road surface.
Yes. With low pressure, the tire deforms more, creates more friction against the ground, and takes more effort to move, so you use more fuel. That tire wears along the edges; wear in the center comes from too much air. Having the same low pressure in all the tires does not fix anything.