Does anyone make a higher rate spring for the rear???

Stock height is ok, but the back dips down so much with hard throttle of if car is loaded. Just want to keep it up a little. I know on my van I can get the monroe coil overs, basically shocks with helper springs, but they dont make them for our car... so I figured a spring with a higher rate should do the trick.

 

I have a G37 sedan and to my taste stock rear springs were too soft even for regular highway lane changing. there are several options for stiffer springs depending on your application, not sure which one will give you least drop :/ swift springs?

 

You can get Swift springs in the length and stiffness you choose.

 

how do I find out how tall the stock Springs are??? What about the rate??

I'd like to keep stock height, but higher rate.

 

I believe that info is posted somewhere here on the forum, but I don't know where off the top of my head and I'm not in a position to search for it right now. You can give it a try though. Or maybe some kind soul who knows will chime in to help you.

 

Thanks for the info. I am at work.. I'll search it out at home.