I'm pretty big on defensive driving (due to the extremely high number of totally incompetent and distracted drivers currently on the road) and have followed this over the years.
When I took driver's training it was taught as 10 and 2...
but that was when the only airbag in the car was...
well, never mind

This is one of those topics that you can get a lot of different opinions on...
and we know what they say about opinions.
There are also a lot more variables today...
Tilt and telescoping steering...
pedals that move back and forth...
the weight of the driver...
the length of the driver's arms...
in the event of a female (well, some males too) how much she has "stuffed" between the her rib cage and the steering wheel

Also still important for the driver to be properly wearing their seat belt
