Which springs : GMG, H&R, SCUD, or AFCO?

In preparation for a track day organized by my Ferrari dealer, I'd like to upgrade my super soft spider springs which are in my mechanics opinion the number 1 must have performance upgrade for the standard F430.

So here are the options:

1. AFCO #400 and #600, 10" length front and back, linear load rate. ($300)

2. Scuderia Red Springs, slightly shorter than stock, also feature a linear load rate, but I see many people complaining about how stiff they are for street use. (600$)

3. H&R Springs, 9" length, drops the car 1.2" front and 0.8" rear which is IMO too much from a practicality point of view, these feature a progressive load rate. ($500)

4. GMG Springs, very little info about them, 10" length, manufacturer claims they are 15% to 40% (progressive) stiffer depending on compression rate. ($800)

So which set do you guys recommend? Anyone here using the GMG set which is originally manufactured by Ebach?

Thank you.

 

Thanks for the info, sent you a PM.

Great looking car in your profile btw ... very unique!

 

Thanks for the info Aryan, I agree the front end was too low, perfect after the adjustment.

I'd really like to go with a stiffer setup, looks like AFCO is the way to go, my spider is already 220lb's heavier than a coupe so I hope am heading in the right direction.