I took my 2005 roadster into the main dealer abut the Rays corroding and they told me that its the leading edges that are affected and this is due to stone chips and that therfore was not a warranty issue. I disagreed with them so they said they would try but 5 or so people had already tried to no avail.
Got a call from the garage yesterday and Nissan have agreed to replace all wheels FOC.
As for the Falkens I had these fitted a while back before I took the car to the Nurburgring in Germany and I've got to say the Bridgestones were much better around the track the previous time than the Falkens. Although to qualify this the bridgestones were well worn in and the Falkens brand new. But next tyre change I'll go for the Toyos not the Falkens.