I have an 09 A3 3dr and after apparently misreading the tyre pressures, I've been at 42 front 36 rear for sometime. I've just checked and it seems that I should be at 36/33 non-M+S medium load according to the sticker on my door. I've just been out and corrected the pressures to this but haven't been for a drive, I guess I'll find out on the way to Midland VW tomorrow.
So is 36/33 appropriate and will I notice much of a difference over 42/36 which I was at?
edit - 225/40R18 wheels