What size 18's will fit, width, et? tyre size?

[POLOS]

As above! Got an option on some Audi A3 7.5x18' splits 5x112 et 54 (adapters size?) They already have pilot sports 225 40 18's on!

[Norbreck21a]

Thought the 6r was 5x100 stud fixing ?

[POLOS]

They are, see the words 'adapters size?'

[BeezerDiesel]

215 35 18 Would be a pretty good compromise.
225 40 18 is much too big for a Polo, that 's a Golf size. In fact if they are decent brand tyres you'd probably get a good price for them on ebay or the forums.

[B1N9S]

20mm PCD adapters would bring the offset down to 34mm. Get the very best ones you can - usually cost about £200 + for a good set and MAKE SURE they are hubcentric 57.1mm.

I have used these before on my Golf, but if I'm honest, unless the wheels your looking at are extremely special, then go for a 5x100 set of rims. Much less expensive and less hassle.

[whitegtipolo]

Max 35mm 8in wide 18in 5x100 with 215/35/18