Three-piece aluminum alloy wheels
are tightened by a central member and two outer rings and screws. In order to reduce quality, many three-piece aluminum wheels use forgings. Three-piece aluminum wheels use forgings. The three-piece structure provides manufacturers with greater flexibility for small batch manufacturing.
For high-speed vehicles, high-temperature tire bursting and reduced braking efficiency caused by wheels deformation and braking are common phenomena. The thermal conductivity of aluminum alloy is 3 times higher than that of steel and iron, and the heat dissipation effect is much better. It improves braking efficiency, improves the service life of tires and brake discs, and effectively ensures the safety of automobiles.
Aluminum alloy wheels usually use radial tires. The cushioning and shock absorption performance of radial tires is better than that of ordinary tires. When the car is driving on uneven roads or at high speeds, the comfort will be greatly improved and the stability will be higher.
Due to the light weight of aluminum alloy wheels (aluminum or steel wheels have the same specifications, the difference is about 2kg) and the high manufacturing accuracy, the deformation at high speed rotation is small and the inertial resistance is small, which is conducive to improving the linear driving performance of the car, reducing the rolling resistance of the tires, thereby reducing fuel consumption.
Because
aluminum alloy wheels
have the following four characteristics, many cars currently use aluminum alloy wheels：
1.Driving comfort has been improved.
Because aluminum alloy wheels have the metal characteristics of absorbing vibration and rebound, they have high dimensional accuracy after being processed by CNC machine tools.It's really round.Partial swing and small beating.The balance is very good, which can make the car very smooth and comfortable.
2.Fuel-saving and normal driving.
Due to the light weight of the aluminum wheels, the rotational inertia of the four wheels is reduced after replacement, the acceleration of the car is increased, the braking energy demand is reduced, and the fuel consumption is reduced.
3. Improve driving safety.
The heat dissipation coefficient of aluminum alloy wheels is three times that of ordinary steel wheels.At the same time, combined with the structural characteristics of aluminum alloy wheels, when driving for a long time, the heat generated by the tires and braking system is discharged into the air to maintain the appropriate temperature.
4.The beauty of the whole vehicle is improved.
The exterior design of the aluminum wheels is very exquisite.The shapes are diverse, and the integration of the wheels can also be realized to show its beauty and enhance the beauty of the vehicle.
There are many parameters involved in replacing the wheels. It is best for interested owners to do their homework first so as not to cause hidden dangers to safety.
1. Center Bore (CB)
Refers to the size of the center hole of the hub.Although wheels with different values from the original factory can be installed through positioners, this is not recommended for safety reasons.
2. Section circle diameter (PCD)
For example, a hub with a diameter of 5x120mm means that it has 5 positioning bolts, and the diameter of the circle they form is 120mm.This value should also comply with the original factory.
3. Offset
Also known as the ET value, this value is positive, indicating that the fixed surface of the hub is outside the center surface, and vice versa, it is within the center surface.The deviation value of a car is generally positive, and this value has a great impact on the stability of the car and the traceability of cornering. It is determined by the original factory and cannot be changed without special needs.
4. Diameter and width
The diameter determines the size of the
rim
.Since the speedometer reading of the car is measured based on the speed of the wheel, the wheel diameter is too large to cause the speedometer reading to be too small. Unknowingly, you are speeding.Excessive wheel diameters will also rub against the wheel arches and fenders.Therefore, it is better to upgrade the wheels to be 1 inch larger than the original factory, no more than 2 inches at most, and to match thin tires to ensure that the size of the entire wheel is the same as before the upgrade.
The width affects which tires are selected after the upgrade. Tires that are too wide will reduce the starting speed and consume more fuel.The correspondence of common values is: 185mm wide tires correspond to 5-inch wide rims; 195mm corresponds to 6 inches; 205mm corresponds to 6.5 inches; 215 corresponds to 7 inches.
