My English Major Wife said the below would be easier to understand. Your facts are correct but were hard for me to understand.
"Rear GAWR is 9750 lbs on a current 3500 DRW 4x4. At 80psi the 4 rear tires are rated at 11,340 lbs."
Not trying to be nit picky!
No sweat. Also an English major (Professional Writing/Journalism), and your wife is correct, a period there would have been more effective than the dash. Just wanted to make sure I clarified what was meant, since you did misunderstand.