Why Does the Steering Wheel Become Heavier After Changing Tires?

[ClaytonRose]

After changing tires, the steering wheel becomes heavier for the following reasons: 1. Insufficient air pressure: It may be caused by the low tire pressure of the new tires. The principle is simple: the original tires had normal pressure, but after changing to new tires, the pressure becomes lower, meaning the rolling resistance increases, making the steering wheel naturally heavier. 2. Mechanical issues: Due to long-term driving, the power steering fluid in the car's hydraulic power steering system becomes dirty, and the owner does not replace it in time, leading to inflexibility in the car's steering wheel. As a result, the owner will feel that the steering wheel is very heavy or even difficult to turn. Therefore, the owner needs to regularly visit a repair shop to replace the power steering fluid.