Why is the steering wheel so heavy?

[OAnthony]

There are several main reasons why the steering wheel feels heavy: 1. Insufficient power steering fluid/oil: Power steering fluid is a medium oil used in the car's power steering pump, which helps transmit steering force and provides cushioning. The power steering fluid needs to be replaced regularly, and checked for leaks. When the power steering fluid is insufficient, the steering will feel heavy and stiff. 2. Low tire pressure: Low tire pressure increases the contact area between the tires and the road surface, leading to greater friction and making steering more difficult, resulting in a heavy steering wheel, which is not conducive to driving safety. 3. Steering gear or power steering pump failure: The steering gear and power steering pump also affect the car's steering. Any failure in these two critical components can cause steering difficulties. Issues such as universal joints, chassis suspension stabilizer bars, or plain bearings should not be overlooked. 4. Overly tight bearing fit: If the rolling bearings or sliding bearings in the steering system are too tightly fitted, it can lead to poor lubrication of the bearings, causing sticking or jamming.