I bought my car some wheel spacers when we were on holiday as I felt that, although my car has fairly wide staggered wheel set up, they didn't really fill the wheel arches. Well they do now!! I fitted these last week, 20mm on the rear end and 12mm on the front. Looks loads better, handles loads better too. I'm happy. It's worth noting also that the Carweb data system at work quotes the torque figure for the wheel bolts at 110 - 130 NM so I've opted for the higher figure since fitting the spacers.