Spacers with 18s

[Ridg]

i've seen a couple of MKIVs that had the rears out further than the front, so that the wheel was sitting more in the arch, looked really smart, but could mess up the handling.

[Car nut]

I would do it as Steve has done, the same amount all round. Otherwise you will upset the track of the car. The fronts stick out slightly more than the rear because it is FWD. On RWD cars the rear wheels protrude more.

Change this and you risk upsetting the cars handling...

Good point Wazzzzzzzzer with 20s your gonna need fecking long bolts 

All extra weight. 

[sambo]

15mm's on rear 5mm on front, no handling issues I can assure you, thats with 8.5j rims too. Does scrub over sharp dip's and bump's but only a touch. 

Spacer's are no differant than smaller / larger offset wheels. Anything over 5mm requires longer bolts too suit (e.g 20mm spacers minimum 15mm longer bolt, think mine are 18mm longer)

HTH Sam  (still here just about) 

[Wazzzer]

at the end of the day it's up to the individual, it's not something I would mess with personally