My same as '03 2500 Dodge has a 13350 lb tow rating. Our 2500 Dodge trucks come with a 9000 lb GVWR and 6000 lb RAWR.
My 11200 lb (actual gross weight) 5th wheel trailer adds about 2200 lbs sitting on top of the trucks rear axle which brings the rear axle/tire loads to around 5000-5400 lbs depending on how much stuff we load in the truck and trailer for a long or short stay.
Keep under those RAWR/tire load ratings on a short bed truck as its carrying all the pin weight.
The 3500 SRW has up to a 16xxx lb tow rating. The 3500 has a heavier rear spring pack/tires and wheels for carrying more payload. Both trucks share the same chassis/engine/trannies/front axles/rear axles. Watch those tire/axle load rating as its gonna' be the biggest safety numbers
