My misses has got a 2006 peugeot 107 (sorry its not a saxo) and we've just tried to fit a set of alloys which the guy who sold to us said they world bolt right on but they don't.
i believe the standard fitting is 4x100 but im need help as once the wheels are lined up with the car they are slightly wider than the bolt holes in the hub.
i have just tried bolting them to my car (2000 reg furio) and they fit but would need a 25mm spacer. ( if this helps)
any help is appreciated
