Morning all, 

I have the 245 estate with 19s on and been offered some 17 inch doltz winter wheels with excellent winter tyres on 

just wondering if they would fit as I can remember reading somewhere the discs on the 245 are bigger ? 
the doltz are 7 x 17 with 225 winter tyres on 

Only the rear brakes on a 245 were bigger (310mm vs 272mm on the rest of the range at the time), fronts are 340mm, same as any other TSI. 

 

There was a lot of guff in the media at launch about it needing the 19s due to bigger brakes but it was just that, guff.

 

17s are still a tight fit around the front calipers though, so it would be worth a trial fit if you can before you buy. 

As long as the PCD is the same and the offset is similar then 17" wheels will be fine - they may be tight as @Kenaimentions but will definitely fit.