my vrs is 20/25mm loered what size tyre can i fit on 18" rims with out rubbing?? and what et does the rims need to be?

been offered 225/40/18 tyres what every 1 think?

That would be fine.

Surely your tyre size is driven by wheel size or am I misunderstanding what you're asking? Mine's lowered about that and I have 225/40 18" tyres and no rubbing. Others have gone much lower without issue.

hi ET are your alloys? mine with my 17s are 35 now and a gain over speed hump with weight in the back it catches, but with 18 i dont want then tucked to far in the arches?

any ideas?