they wont fit directly, the centre bore is too small, rover is 56.1, VW is 57.1.
You'll need to bore out the hole in the centre of the wheel. What I would do is get some 16mm hubcentric spacers inside bore of 57.1, and outside bore of 56.1. This kills 2 birds with 1 stone, not only will they fit but the offset will be low enough to fill the arches out nicely. ET45 is far too low fro a VW, might even hit the shocks! With 16mm spacers the ET will drop to 29, much better