So after a few days of real world driving, I'm going to withdraw my endorsement on these springs. While on glass smooth roads they are great, in the typical poorly maintained New England roads they are too stiff and give too much of a punishing ride. I'm not talking just potholes, "wavy" highway roads can develop a motion that starts to make you feel like you want to hurl. I'm going to put the original springs back on...FAIL!