DRW vs SRW safety, tire blowout
Every time the DRW vs SRW debate starts up, dually owners always point to the safety of having 4 rear wheels in case of a blowout while driving. What I am wondering is has anyone actually experienced ...
Forum Discussion
3 tons wrote:Bedlam wrote:
Since the frame pivots on the axle at same point of a DRW and SRW pickups, I think the stability comes more from sidewall stiffness and higher rated springs. Until you start picking up a rear wheel I do not feel the width plays a role.
Believe whatever you like…as I stated, not from pontification but from actual real back to back experience from having two identical trucks differing ONLY in SRW vs DRW, there IS an outrigger effect, but honestly I almost feel like I’m barking at the moon, so for those doubting Thomas’s enjoy your comfort providing paradigm and feel free to disregard…:)
3 tons
Except Bedlam is right. Until the springs flex enough to put the C of G out past the edge of a srw tire, both chassis’s react the same if they have the same spring rate. However 6klbs of tire capacity vs 3500-4000lbs best case is a minimum of 50% greater carrying capacity and subsequently less tire flex.
The outrigger effect is due to the stiffness of the tires and it’s real. It’s just not due to the width until the above happens.
Just like the “dooleys stop faster” theory. Only true once you reach the threshold of traction on the srw tire.
All other things equal, a Dooley weighs more and has more rotating mass to control. Therefore the same brake pressure has slightly less net effect on a dually.
