280z4me2 Posted February 1, 2013 Share Posted February 1, 2013 Friend of mine has access to a milling machine of some sort and has offered to drill my hubs to a 5x4.5 bolt pattern. I just need the x and y axis measurements starting from dead center. Anyone happen to have this or a good machine type drawing of the degrees so I can figure it myself? Quote Link to comment Share on other sites More sharing options...
scott Posted February 1, 2013 Share Posted February 1, 2013 you can calculate the X,Y coordinates of the holes in a 5 lug x 4.5" bolt circle by using the following: holes separated by 72 degrees, radius of bolt circle is 2.250". Use Trigonometry to calculate the X,Y coordinates, See attached file. Check by laying wheel bolt circle over X,Y layout Quote Link to comment Share on other sites More sharing options...
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