Where can I put jacks under the rear off my car that are not on the axels? Im trying to change the rear coil springs and need to jack it up. Thanks

 

theres two 'frame' rails just before the rear tires, there under the car quite a bit, if your jack wont reach them, jack useing the rear axle, and let car down on jackstands on those rails and remove the jack from the axle. just becareful on the drivers side not to jack up the fuel lines that are near it