The main parameters of automobile wheels are: wheel size, PCD, offset ET, center hole
Wheel size is composed of two parameters: tire diameter and tire width. There are 15×6.5; 15×6.5JJ; 15×6.5J; 1565, etc., The “15″ in the front represents the diameter of the tire, which represents the diameter of the tire of the wheel hub is 15 inches, and the “6.5″ (or 6.5J, 6.5JJ, 65) at the back represents the width of the tire, which represents the width of the tire of the wheel hub is 6.5 inch. The size of the wheel can usually be found on the lettering on the back of the wheel.
PCD: Refers to the pitch circle diameter of the wheel bolt hole. Representation methods such as 5×114.3, 10×100/114.3, “5″ means the number of bolt holes, which means there are 5 bolt holes. “114.3″ means that the pitch circle diameter of the bolt hole is 114.3mm
Offset: (also called ET) is the distance between the mounting surface and the center line of the wheels. This parameter can usually be found on the back of the hub. The offset is used to adjust the wheelbase and ensure that the wheels do not interfere with the car body.
Center hole: It is the big hole in the middle of the wheel hub. Note that the size of the center hole is measured from the back to be the correct data. Each car is different, BENZ generally 66.6MM, BMW generally 72.6MM. If the wheel axle hole of the rim is large, you must use a center hole collar, otherwise the wheel will shake at high speed.
Post time: 03-12-21