aquazi, no, these are standard profile tyres - but I know on the sports (-15mm) setup there can be contact with M wheels and tyres, so running a few mm lower with the correct tyres, I should be okay.
As for the plate, I keep one on the dash if I don't want to run the risk of being late - will probably do the same when going into cities - especially London! Am looking at getting a vinyl plate to fit at the top of the window, passenger side.
Kryton, sorry, missed this before, we must have been posting at the same time... not tried any speed bumps yet... am almost tempted to seek some out to test it.
Shooter, ha, I know exactly what you mean - I prefer a constant gap around the wheel.
To be honest, it is not as bad as it looks in the photos, if the car is level. Of course I don't have a side on picture there, but this gives an idea...
But you are right, it does sit slightly lower than I would like. However the standard 2.5 height was slightly too tall the other way. These springs are as close as I could get to the 3.0 height without fitting the crappy BMW ones.