You've mentioned speed traps several times. Just pull up to an officer that's running radar, explain the situation and ask if he will clock you.
Drive by at the speed limit, get clocked, and drive back to get your difference (if any)
I have done this and it works out well -- IF you get the right officer and approach them the right way.
All that said, I would be willing to bet that the smart people at Volvo have calibrated the speedo correctly for the larger tires, and with the smaller tires you were actually driving slower than indicated.
Drive by at the speed limit, get clocked, and drive back to get your difference (if any)
I have done this and it works out well -- IF you get the right officer and approach them the right way.
All that said, I would be willing to bet that the smart people at Volvo have calibrated the speedo correctly for the larger tires, and with the smaller tires you were actually driving slower than indicated.
