Leaf spring U bolts torque spec

I read on another thread that 45 ft pds is correct.
It's so the springs will work correctly.
If they are overtightened you may experience a harsher ride.
here's the thread

http://www.forabodiesonly.com/mopar/showthread.php?t=252394

WhickedDart said

Ok thanks. But there must be a reason for the 45lb spec. The service manual also says in bold letters "do not over tighten u bolt nuts"

Click to expand...