I'd like to see a source for that. It's wide, but it's still within federal limits.
I expect you're talking about curb weight. 6500 pounds for a gasser F250 is pretty typical, a bit north of 7000 for a diesel (which is 3.5T). But it's impractical to go by curb weight, the real number is GVWR. Can't tell what someone might be carrying and it all goes to the road.
For someone from Europe this sentence is insane. Calling a truck heavier than 3 tones a regular vehicle is just mindboggling. In most (all?) of Europe you need a special license to drive a vehicle that is over 3.5 tonnes.