Soo...does anyone know the lowest i can go then the front is okay...as there are already people running that setup...but as for the back 215/40/17 how low on coilovers can i realistically go?? with or without passengers??
 
I've got 17" 225 width alloys on my Ibiza, only downfall is that they scuff inside the arches and sometimes the arch hits the top of the tyre. Mine sit flush with the arches (or so Turriff Tyres told me!!), but in my opinion the stick out about 3mm
 
Shouldn't matter then, I have ET38 with 20mm rear spacers - so ET18 now, no rubbing on lowest setting...

Front is just over 3/4 of the way down.