From the structural point of view Lexia-3 USB Cable the rim can be divided into

From the structural point of view  Lexia-3 USB Cable the rim can be divided into the piece and multi-piece structure. The multi-piece wheels that frame and spokes are manufactured separately and then screws, they are now able to buy one modified rim. Its benefits is the one hand, easy to manufacture, because the the frame available steel rolled into; convenient maintenance and multi-model interchangeable on the other hand, like the spokes of the same model can be equipped with a different width of the frame, to further reduce the cost of production. Now, the multi-piece wheels because the number of parts, production processes, and looks sophisticated, noble feeling, so the price is more than one type of wheels but also much more expensive,  Lexia-3 USB Cable but usually multi-piece wheels heavier, and rigidity not as forged wheels.

Upgrade wheels a few precautions:

1, the rim offset (offest value): It is the distance between the the rim screws fixing surface with the geometric centerline (rim cross-sectional centerline), to put it simply rim intermediate screw bezel, with the entire rim the difference between the center of the rim facelift inwardly indented or outwardly VAG-Com projecting. General RV for positive and negative in terms of a small number of vehicles and some jeep for. Such as a car, the offset value is 40, put 45 aluminum wheels, will be more than the original wheels retracted into the wheel arches within. This data with the vehicle steering characteristics, wheel alignment angles have a relationship, the gap is too large offset values ​​may result in not normal tire wear, bearing wear, and even high-speed puncture out of control and other issues can not be careless.

The PCD value holes: holes means is the rim fixed when the lock into the screw and nut number, typically 4-hole or 5-hole. The diameter of the PCD value sucked these holes connected to form a circle, installation parameters must be consistent. German car is more than 5 holes, such as the Mercedes-Benz more than 5 × 112mm BMW more than 5 × 120mm. Some wheels may  uobd2  drill 8 holes, and is prepared to adapt to two different PCD value. Although porous bit convenient corresponding to a variety of wheels, but will make the reduction in the stiffness of the rim.