[07cob]

Andrew

If it helps, the exact PCD can be calculated for a 5 stud wheel as follows:

1. Measure the distance between centres for two studs with one between them, as per the instructions in your link (you have already done this and got 114.3mm!)

2. PCD = your measurement x 1.0514622, or if you have one of those fancy scientific calculators or a slide rule, PCD = your measurement x sin72*

So your 114.3mm would be a PCD of 120.18mm or 4.73", which I would suggest, as you point out, is quite different to 4.75".

How did you make your measurement? Could there have been some small error? You would only need around 0.44mm error to account for the difference, if they are indeed 4.75mm PCD hubs. If they are actually 120mm PCD then you would only need 0.16mm error.

The only other thing I can think of is if you are using verniers, be sure that neither tyne sits inside one of the threads. Use the inside section of the callipers to cover more than one thread on each stud.

Good luck

Geof