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In Cali in order to register a vehicle purchased out of state you must smog, weigh, and have the dmv inspect it. Although I wouldn't 100% trust the scales around here. Most are not maintained properly. I would say they give you a accurate number within +-3%This should be common sense but the shipping weight and curb weight are two different things. If you care enough google the difference and you will see what I mean. The shipping weights are standardized most of the time and do not take into account a few different factors. Your TRX doesn't weigh 625X lbs. driving around, guarantee it. Driving around a delivered TRX you would be closer to curb weight/6400 lbs. than 6200 lbs. Unless you have a pic of your delivered TRX on a scale the weight on the title doesn't really mean much in the real world.
And you have to weigh a car after you take delivery to get a title?? That is news to me. Do they have weigh stations at the DMV or something? California thing? Never had to do that where I am from.