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Also asked, what is car wheel offset?
The offset of a wheel is the distancefromthe hub mounting surface to the center line of thewheel. Itis common to find a positive offset in newerand frontwheel drive vehicles. Negative offset iswhen the hubmounting surface is toward the back or brake side ofthewheels centerline.
Simply so, what is positive offset on a wheel?
Positive offset means that the mounting plateisin the outside half of the wheel, toward thewheelface. Most OEM wheels, and most wheels ingeneral,will have a positive offset. Negative offsetmeansthe mounting plate is on the other side of thewheel'scenterline, farther toward thesuspension.
That gives you the offset of the wheel.Ifthe centerline number is smaller than the hubmeasurement,offset is positive. On most cars, changingoffset byjust 5 mm is enough to notice a change in the car'shandlingbecause it changes scrub radius by the same amount, andthat mightalready be only a few millimeters.