Originally Posted by dean4537
i would believe if you push down on them and they sag thats when you would know they're warn out
Unless you pop a can of spinach, dress like a sailor and go by the name Popeye. Like stated above, the springs has to be installed to know if they sag. Buying used is hit and miss unless you know the actual reason for it's removal and truth from the seller. I would always recommend buying new when it comes to springs just at least for the piece of mind of some type of warranty.