I had a FL2 on a 09 plate with the standard 17" alloys and it just fitted under the up and over garage door (had to remove the roof bars though), i'm now getting a Dynamic model which has the 19" alloys fitted and i'm worried the ride height will be too high?
I know the tyre profile is lower the bigger the wheel but does anyone know the exact height differences?
Is the facelift 2013 model the same height as a pre facelift 09 model (not sure if suspension, etc was changed on later models)?

Thanks

Use this site to compare total diameters

http://www.kouki.co.uk/utilities/visual-tyre-size-calculator

They should be much the same as the suspension hasnt been changed to my knowledge Jules

Changing wheel size will not change the height of the vehicle because as you go up in wheel size you go down in tyre profile height in this way the overall tyre circumference (rolling distance) and therefore the wheel diameter (height) remains the same - that is if you stick to the standard sizing.