Quote Originally Posted by Amalgam View Post
+ 1

I did the same with my Evo X when it was time to replace my tyres. My local Bob Jane was very helpful. We went up one tyre width while retaining the same section and it brought the difference down to 0 calibrated against the GPS.

Have a look at

Object moved

All these combinations are legal.

245/45/17 or 255/45/17 should work. You just need to do the maths.
245/45r17 will be really baggy on the usual 7.5" rims most VWs have. Recommended rim is 7.5-9". If nothing else the ride would be very plush.

255/45r17 is minimum 8" rim.

Basically, to fix the issue properly yo have to fit an illegal diameter tyre size, which most people aren't willing to do.

You will get reasonably close (for most people) if you increase diameter by a legal amount & have a fiddle with the correction factor via vcds.