Quote:
Originally Posted by Neil
Never had a car that showed me going slower, they are always out on the being careful side thought. At 70mph on the clock satnav thinks I am doing 67mph. Satnav is more accurate because your speedo reading can change slightly as your tyres wear. I thought they allowed 10% still
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I thought it was 10%+2, and only a guideline so down to discretion of the officer I guess. New rules on speedo accuracy came in 2001 from what I've read today.