5 Kinds of small accessories commonly used in car wheel modification

1. Center hole collar: The center hole of the OEM wheel is exclusively produced for the vehicle type, so the center collar is not necessary for the suitable vehicle type. Aftermarket (Aftermarket) wheel center hole size is often different from manufacturer to manufacturer, 73.1mm is the most common. There are hundreds of specifications for the center ring, and the materials are colored aluminum alloy, high-strength plastic, and copper (thickness less than 1mm). Manufacturers generally distinguish sizes by color.

2. Bolts and nuts: bolts or nuts for fixing wheels. Bolts are commonly used in German cars and nuts are commonly used in Japanese cars. The wheel bolts used in cars are generally M12 and M14. The German series mostly use M14, and Japan uses M12. There are 12x1.5, 12x1.25, 14x1.5, 14x1.25 threads. (Hexagonal HEX) There are 17MM, 19MM, 21MM, British 13/16, 7/8, 3/4. Some wheels have smaller PCD holes and also use hexagon socket bolts. There are two types of wheel bolt holes: spherical and tapered (60 degrees) (very few cars are flat and must have gaskets). For example, many BENZs are spherical and BMWs are tapered. There are many taper bolt holes for AFTERMARKET wheels, the bolts must not be wrong, otherwise it is dangerous. The thickness of the wheel bolt holes is different. German cars are thicker and Japanese cars are thinner. The bolt teeth must be engaged with more than 10-12mm, so sometimes the extension bolt is used to change the wheel.

3. Valve: Valve (Value) is essential. TR413C is the most commonly used. In order to look good, there is also a color case with aluminum alloy. New tires must use new valves; rubber valves are used for steel wheels and tires of S and H; metal valves are used for aluminum alloy wheels and tires of VR and ZR.

4. Offset spacer: If the offset of the wheel is not suitable, it can be corrected by offset spacer. Generally made of aluminum alloy, the thickness should not exceed 10mm (but gaskets are rarely used at present).

5. Balance weight: Depending on the shape of the wheel, a cassette or sticky balance weight is used. The weight of each wheel is different. The balance weight of some wheels is installed on the inner and outer sides of the wheel, but the balance weight of some wheels is only allowed to be installed on the inner side of the wheel, so it is difficult to find the balance weight from the outside.