411/412/603 wheel nut torque?

[Rubbond]

In my experience, wheels usually fall off because the garage mechanic simply
forgot to tighten the nuts at all.
In small garages usually the result of going off to answer the 'phone.
If do your best with a standard wheel wrench (with the wheel back on the
ground of course) this will normally be more than adequate.
I wouldn't advise the mechanic about anything. Let him pretend the wheel is
a brand new component, and he should be able to get his head around that.
I lost 4 out of 5 wheel nuts on the front left-hand wheel of a Range Rover
(on the motorway!) about 3 years ago. It starts with a vibration as if
you've lost a balancing weight, but when you slow down, it's not nice at
all. The Anti-theft nut seems to stay on longest.
On that occasion the garage actually admitted they had forgotten to tighten
the nuts after replacing the brake pads. (It happened within 40 km).
How could you sue someone that honest? He even supplied the new nuts at his
cost! Don't use him any longer of course.
I also once got a cup of boiling water spilled over my stomach at an airport
in the USA (they call it coffee there). I guess that was the first million I
lost?
More recently I lost 2 nuts on a Discovery, over1000 miles after the last
service. I think that time it was the front right wheel.
It is logical isn't it, that the left wheel nuts will always loosen more
quickly, due to friction and gyroscopic forces?
Maybe Top Gear could put this to the test on their track.
Wheel nuts on Land Rovers by the way are very expensive. I believe they are
stainless steel, so they don't rust solid as with many cars.
I wonder if people just steal them?