The Reid wrote in
:

Following up to Adrian Tupper

That fits the 10% + 10% rule.

do you mean 10% +2?

Absolutely not. They measure you doing 40 and say you're doing 36.
You speedo says you're doing 30 but you could be doing 33.

In this case, you still get nicked.

--
Adrian

Remove packaging and take out insurance before emailing me