trailer weighs more than 7500lbs if you are just going off weight on trailer tires... add another ~2000lbs putting more the 20,000lbs on the deck something is most likely over loaded...
the other would be what the coupler is rated for.. biggest 2 5/16 is 9k/30K 9k vertical and 30k gross trailer which hitch weight + axle weight.. figured I make that clear since there are a lot out there that think trailer weight is only weight between the ground and trailer tires :doh:
avg GN coupler is 7.5k/25k kit
there's few that have a GN hitch rated for 9k/30K
AFAIK no one officially makes a GN hitch with a 10k/40K rating with a 3" ball..
B&W make a 3" version but its 7.5K/30k
im reading some of the lastest OEM trucks are coming with 3" GN balls now factory equipped.. ford is running a 3" reciever hitch im sure dodge and and GM are close behind and capable of close to 20K on a bumper pull...
un a goose doesn't exist anymore they where rated at 20k/60k
Wallace Forge Company
they make a 2 5/16 and 3" both with 2' thick shanks rated at 30000lbs, and 40,000lbs... they do make a 2 5/16-1 3/8 shank rated at 40,000lbs as well
as for the scales.. I was referring to the CAT/certified scales.. quarries don't really care that much about actual weight.. as in whether its reading heavy or light... the scale usually doesn't change in the short time a bucket is into get loaded and back out....
seen several hotshots run props. on the bigger ones either they need a double drop/RGN or a SD with 17.5/19.5 to get 33-36" deck height to keep from hitting OS regs.. smaller ones I have seen in the back on a 2500 truck stacked 3 wide on racks..
I know a few guys that have found a way to wiggle around the axle ratings rules... not on the big stuff but the little stuff.. not going to get into it because I don't condone it.