![]() Wheel information There are
only five dimensions of importance when measuring a wheel: Rim Diameter, Rim
Width, Offset, Backspacing and Bolt Circle (PCD).
Rim Diameter The diameter of the wheel's bead seat where the tyre sits, NOT the overall diameter of the wheel. Rim Width The width of the wheel, measured from bead seat to bead seat Off Set The positive or negative distance from the wheel's centre line to the mounting surface of the wheel. Backspacing The distance from the mounting surface of the wheel, which contacts the hub, to the back rim flange. Bolt Circle Sometimes referred to as bolt pattern or PCD: the number of stud holes on the diameter of the imaginary circle that each stud hole is centred on
5 Stud. Measure from back of hole to centre of the second. 4 Stud. Measure middle two holes directly across from each anther 6 Stud & 8 Stud. Measure same as 4 Stud. |