What are the disadvantages of stock cars?

[StephanieLee]

The hazards of stock cars are as follows: 1. Oil oxidation corrodes mechanical parts. When a vehicle is parked for a long time, oil oxidation becomes very severe. After oil oxidation, firstly, the lubrication effect deteriorates significantly, and secondly, some acidic substances can corrode mechanical parts. The longer the vehicle remains idle, the more severe the deterioration. When the engine is started again, dry or semi-dry friction occurs between the cylinder and piston, accelerating part wear and significantly increasing starting resistance. 2. Tire deformation. After a car is parked, the vehicle's weight is borne by the four tire contact points with the ground, causing localized compression and deformation. The longer the car remains stationary, the harder it is for the deformed areas to recover, altering the weight distribution around the tires and resulting in uneven rolling radii and tire imbalance. Once the car enters high-speed driving, it can cause body shaking, posing a safety hazard.