If you start getting close to OEM rating limits, you need to find which component has the lowest rating and upgrade it. The rear of my truck (which uses the same frame, engine and transmission as the DRW 1t) had 6100 lb rated tires on 7000 lbs rims, 7000 lb suspension and a 9750 lb axle. I replaced the rims and tires to get 9610 lbs of tire rating, but am actually limited to 9000 lbs due to my rim choice. The suspension was upgraded to handle 9000 lbs and now I feel confident I am not above the ratings of the currently installed components.