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What does a negative value mean?

Time: October 21, 2022

A negative-value rim measures the deviation value between the fixed surface of the rim and the centerline of the rim. Therefore, when a negative-value rim is a larger negative value, it means that the greater the deviation distance of the rim, the greater the degree of outward tilt.

When you see the word ”offset", this will have an impact on the performance of the tires and the performance of the wheels, and it will also have an important impact on the performance of the car.Because of the offset, the wheel spacing will be affected.To a certain extent, it will affect the grip of the vehicle tires and the stability of the vehicle.The offset is the value that represents the difference between the stress surface of the rim and the center datum of the rim, in mm.

If the stress surface of the rim is outside the central datum, the rim will be a positive rim at this time.Under normal circumstances, the positive wheel rim is used as the original wheel rim of the car.Safe, stable, and does not produce additional air resistance, which is the advantage of positive wheels.On the contrary, when the stress surface of the rim is inside the center datum, the rim will be a negative rim at this time.

Due to the large wheel track width, it can provide better stability for the car, and it can also allow the tires to better exert their lateral support ability, which has become the advantage of negative wheels.However, negative-value wheels are usually on the outside of the body, which will cause a certain degree of resistance, and it is easier to scratch other objects.In simple terms, the negative rim can provide greater support.

The recording method of the offset value of the wheel rim is generally etxx. ET+20 means that the offset value is +2cm; Et-20 means that the offset value is -2cm.Usually, the maximum value of a positive value is +50, and the maximum value of a negative value is -44.



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