Here is the wheel size link:

http://www.wheel-size.com/calc/?wheel1=195-65-15X6ET47&wheel2=225-40-18X7.5ET51&fcl=50mm&wcl=30mm&scl=50mm

 

On my 2010 1.4tsi stock is 6j15 ET47

The Neptunes are 7.5j18 ET51

 

I have tried searching... I know similar questions have been asked.. but I just can't get a grip on it... does this work...?

They will fit exactly the same as they do on the VRS.. the only difference in the hubs/ suspension set up on the VRS is they are 5mm lower than yours and the brakes are bigger.

yes they fit 

 

They'll be 15mm closer to the outside of the mudguard & 23mm closer to the strut.

 

I've just gone to that size rim and with the standard size 225/40r18 tyre it looks a bit "lost" under the guards.  If you have to buy tyres then think about 235/40r18 or 215/45r18 as it has a bit more diameter

yes they fit 

 

They'll be 15mm closer to the outside of the mudguard & 23mm closer to the strut.

 

I've just gone to that size rim and with the standard size 225/40r18 tyre it looks a bit "lost" under the guards.  If you have to buy tyres then think about 235/40r18 or 215/45r18 as it has a bit more diameter

"A bit lost" - you mean the tyre is so thin? 

"A bit lost" - you mean the tyre is so thin? 

Yes.

 

I know the overall diameter (about 640mm) is no different between the various rim diameters but visually they don't seem to fill the guard.  I'll admit for the last 100,000km I've been running approx 660mm diameter tyres so I've gotten used to the guards being filled up

Edited 24 June, 201511 yr by brad1.8T