Originally Posted by Biker Biggles

I think the legal requirement is that you have a speedo that is accurate to within 10% at 30 mph or am I out of date on that?Thats also where I thought the 10%+2 thing came from.That is although the law says 30,it would be unreasonable to enforce it that rigorously given the required accuracy.Maybe Im harping back to times when common sense was more acceptable than it is today.