I do hear where you are coming from M30 but like Notso says I have to make allowances.
I think I would be happy with 18s but 20s have a bigger 'wow' factor and the tyres are not that much more expensive (Toyos T1Rs)
If someone said to me 20" would be detrimental to the way the car handled and performed, that would be a different matter but if the difference is negligable then the 20s hold a better 'pull' for me
