Eos rims on a Passat?

[Hillbilly]

That size would probably have clearance issues when cornering. I've run 225/50r17 on the Octy and they are a tight fit up front. I couldn't go into a downhill sweeper or hit a mid-corner bump without the tyres scraping on the bodywork.

Keep in mind that the thickness of the speedo needle is worth a couple of km, so you really only need to bring it within 2-3km. That's what worked for me.

I run on the digital readout in the MFD and never look at the needle Is more accurate otherwise I hold the button in and read off the Canbus