I was thinking about putting a set of springs on my car to lower it and stiffen up the ride a little, but I noticed most of the spring manufacturers have different rTed springs and they use letters for a rating system. Can someone help educate me on how the rating system works?

Lee

 

never seen a letter used to rate springs, who's springs are you looking at? Also think about shocks since the springs may stiffen but not remove the floaty feel stock shocks have

 

FRPP's springs have letter designations if I read it correctly

 

Ford I don't believe posts their spring rates, but I see what you mean now, I would say that is more a part number designation then anything. This should help you determine which spring to go with based on rates and drop, http://bossmustangsonline.com/index.php?topic=5659.0

 

OP, how low are you wanting to go? Every FRPP spring set we tried (minus K springs) we liked. P springs are pretty conservative whereas the K springs are fairly aggressive. What are your goals?

 

I was thinking 1" to 1.25" in the front and 1.5" in the back

 

Go with BMR. Perfect drop, nice ride. Camber plates not needed.

 

K springs are way too stiff. When I had them, I got zero weight transfer, which gave me zero traction from a stop. Ive heard bmr is good in regards to weight transfer. Probably too soft though.

 

Yeah BMR aren't drag springs. I like them for DD.