Diameter of wheel centre cap for Knight Wheels

[VWPoloBoy989]

Hello,
I wonder if anyone can help. I have just bought a 2011 Polo 6R 1.2 petrol which has 16" Knight wheels.
The wheels have been refurbished and look good, but the centre caps have "white worm" on them which make them look scruffy. I would like to replace them for new wheel centre caps. Does anyone have any idea what diameter wheel centre caps I need for the Knight wheel?
This is my first post on the forum.
Thanks very much.
https://www.google.co.uk/url?sa=i&url=h ... AdAAAAABAG

[SRGTD]

Sorry, I don’t know the diameter of your existing centre caps. However, assuming your existing centre caps are OEM VW items they should have the part number on the reverse side, and if you do a Google search on the part number you should be able to find the answer to your question.

[VWPoloBoy989]

That's a great idea - thank you. Will do.

[VWPoloBoy989]

Have checked them - put a drill through the centre and then pulled it out with an allen key, since they are beyond repair. For others who may need to know, the code is 1J0601171. According to what I can find from sellers, they are 56 or 56.1mm. Hope this helps someone else who may need to know.