you are looking for a number that is very different on all DRVs as each one is a little different and there for their weight is different. Ryno is right @ 20% of total weight -- 40 rksb run @ 19 k from factory and than you load it !!!!!!!
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ARCliz - retired IBEW / FULLTIMING
2013 RAM 3500 Mega Cab DRW / 3.42
2016 DRV 41RSSB4 ( plus 1 ) PERSONNELIZED
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