Yeah, I figure maybe I'll try to hit another scale somewhere, sometime, just to compare and make sure it's not 200lbs off or something. I'm not too worried about splittin' hairs though.
To be honest, I was hoping it would be lighter.... but my guess before I saw your number was 150 lbs heavy.
I would LOVE to have a set of wheel scales, a bunch more accurate and informative than a truck or racetrack scale.... but I just can't justify the crazy price, just to weigh a few cars.