I apologize in advance for the long write up. I was driving back from Vegas to LA earlier tonight and had my cruise control set at about 82 or 83 mph when I got pulled over. Actually the cop(CHP) drives up next to me, flashes a light at me and I assume he's telling me to pull over, then proceeds to speed up and chase down an ML that was ahead of me. Part of me was telling me to keep going, but the honest side won and I pulled over. The chipper came up to the car and asked me if I realize how fast I was going. I know the speed limit is 70, but most cars on the road were going about 80mph and I like to go a little faster than the flow of traffic.(I didn't say that to him though.) Well apparently the cop wrote on the ticket that he had clocked me going 89mph! I told him that my speedometer was showing somewhere between 80-85mph and I didn't even have my foot on the gas pedal, but he said that there is a 6% downhill grade through the Cajon Pass and with the weight and load of the X5 (2 passengers and a full load of luggage), I was going that fast. My understanding is that cruise control keeps you at a certain speed and lets go of the gas if you're going downhill and uses the engine to slow you down. Is this correct? If this is the case, then this leads me to think that my speedometer is not correctly calibrated and that I would need to get it checked. Even though I was over the speed limit, would I be able to get this ticket dismissed based on the fact my speedometer may be off? And is there any way to beat this ticket? Any help or advice would be much appreciated. Thanks.

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