va dar ka radau, bet nezinau kur cia eit, kad pakeist, gal kokiu ideju kur per vagcom galima rast situs nustatymus?? 

For the archive......

SEAT Leon FR 1.9 TDI 150.

225/45/R17 Wheel/Tyre Size

Original instrument soft. coding - 04404

Changed to 04405

Before change - Between 60-90 MPH resulted in generally a 5-7 MPH over-read on speedo

After change - 1-3 MPH over-read on speedo between 60-100 MPH, approx 2-4 MPH over-read at lower speeds.

Bear in mind that this calibration does not show on VCDS when adjusting the soft. coding on instruments for UK. 4 & 6 is shown as last digit adjustment but I found that 6 coding under-read too much at higher speeds. I guessed at 5 and it works spot on.

Hope this helps for somebody in the future.

Cheers.