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+44 (0)1753 549 360
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Calculating P.C.D.
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P.C.D. is the Pitch Circle Diameter and is the diameter of an imaginary circle drawn through the centres of the holes. |
Three Stud |
To calculate the P.C.D. of a three stud wheel or hub measure between two holes next to each other (as with five stud below) and multiply by 1.154. |
Four or Six Stud |
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The P.C.D. of any wheel or hub with an even number of holes can be measured from the inside of one hole directly across to the outside of the hole opposite. |
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Five Stud |
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To calculate the P.C.D. of a five stud wheel or hub, measure 'X' from the inside of one hole to the outside of the next hole and multiply by 1.7012. The table below is a reference guide for some common sizes. |
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'X' inches |
'X' mm |
P.C.D. |
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2.351 |
59.715 |
4" |
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2.498 |
63.449 |
4¼" |
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2.645 |
67.183 |
4½" |
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2.792 |
70.916 |
4¾" |
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2.939 |
74.650 |
5" |
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3.233 |
89.586 |
6" |
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3.820 |
97.028 |
6½" |
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2.314 |
58.779 |
100 mm |
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2.499 |
63.481 |
108 mm |
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2.591 |
65.832 |
112 mm |
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2.777 |
70.535 |
120 mm |
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3.008 |
76.413 |
130 mm |
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3.240 |
82.290 |
140 mm |
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3.703 |
94.046 |
160 mm |
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UK Sales: 01753 549 360
UK Fax: 01753 547 170 | | Export Sales: +44 (0) 1753 598 382
| | Motor Wheel Service International Ltd, Units 1-4 Elder Way, Waterside Drive, Langley, Slough, Berkshire, SL3 6EP, UK |
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