Thanks very much for that. I will just go for the 30mm then. I will ask how much it is from Mazda just for the parts and then work out labour costs etc etc.
Do you know of anywhere in the Carlisle area that would be better fitting and setting Geometry than the Mazda garage? If not and when I come down south for a few days I will give you a call and see if you can fit me in for a check up?
If I get Mazda to supply and fit and ask for a chassis report afterwards what should I be expecting to see so I know they have done it correctly? In regards to Toe, Camber etc etc?
PS. Thanks for the quick responses and sound advice.