Most the information we need is on the tyre. Firstly, we need the tyre size e.g. 500×10 or 145/80R10 – this is imprinted on the tyre wall. Secondly we need to know the PCD. A complete guide to work is out is on our Guides and Diagrams page.
But we do have a few little cheats. If there is a cut out in the centre hole to allow a grease nipple then the PCD is 4”. If the wheel has come from an Erde, Daxara, Trelgo or Noval, it’s almost certainly 115mm PCD.

If you still need help, please don’t hesitate to email us with as much of the following information you can:
Make and model of trailer, Tyre size, & PCD