ok it couldnt last

My mates 405 Saloon is lowered -40mm and on 17's, and it does scrub every now and again. Of course, torsion bar at the back, so a man of your skills can probly deal with that himself ;) If you're willing to do a little chopping under the arches, 18's would go on no bother, they'd go on anyway but with a little scrubbage ;)

You only need two - it's torsion beam at the rear. Lowering the torsion beam doesn't make it stiffer though, so you may well get rear scrubbage at full-travel with big rims on.

Knowing Rob's passion for the bodge, thats nothing a couple of welded solid dampers wouldn't fix. (c:

Douglas

You'll get scrubbing on the front on sharp cornering with 2 people in when lowered 40mm on 17's.

The 205/40/17s are less diameter than the standard 185/65/14s - and there's more than enough clearence for the extra 2cm of width.

If Ryan's (the 405 in question) scrubs, then his springs are too soft (it's almost certainly the case that he won't have uprated springs for his heavier diesel engine), and/or his rims are the wrong offset, and/or he's not got