mine is supposed to be lowered 25mm and it is noticeable, it sits much better on the alloys. the overall look is much better, it sits that much neater and looks much better.
i do want to go lower mind lol
Andy
the proud owner of patch, the multishaded Heraldic blue Bravo
I'd say definately go for 40mm. It just looks perfect around a set of 17's, plus you'd never get any scrubbage, and it's still high enough to not scrape bumpers when parking etc.
I'm sure you'd regret going for cheaper springs after all the effort of fitting them! I'm sure it costs about £90 or even less for 40mm springs
I did them myself in an hour or two. Nothing too complex as long as you use your head. You'll need to buy/borrow some spring compressors, and obviously be carfelu so as not to let the spring fly off and take your head off. There's really nothing to it!