New member seeking advice from VW Vortex

[Casper23]

Hi. I have a VW Jetta with non-standard wheels. The wheels are fine, but two of the caps ''mysteriously disappeared" (i have no idea where they went or who has them, if they fell of or someone stole them. The caps were ICW Racing. What id like to do is buy some new ICW Racing caps, it's likely they'll be used but that fine, my PROBLEM is i just have no idea of how i should buy the right size. Specifically the right size. Just because i see some that are similar does not mean they will fit. Thanks so much, if anyone could give me some advice id really appreciate it.

[AWhiteRabbit]

Pop one of your other caps out and measure it with a set of calipers

Measure in MM