All the springs they use are linear springs. The ones in the picture were for display purposes and fitting only. The springs on my car are 450lb front and 850lb rear, but they can do almost any rate requested.
Man, stock height to -1", linear spring rate choice, and camber plates! Where do I sign?
No the rear are linear. Springs in the pic are display. that's 300lb higher front and 200lb higher in the rear, I was base car not PP. If you look at the other rates provided by other manufacturers for just lowering springs, even steeda linear springs, the rate is pretty good. And your shocks have a lot more to do with being able to handle those rates. I wanted a decent DD ride as well as being able to autox/track once in a while. I will be going to drive some twisties soon. But I do believe the car is going to be balanced.
Final pricing isn't complete yet from what they've told me, but most of ground controls pro-kits are in the 1800-2000 range.
You should be thinking of the rate increase as a percentage though, not an absolute number.
A lot of the handling-focused spring packages have larger front increases. Example, BMR Handling springs are 300/980, so 82% and 35% over PP rates. The increased roll stiffness (and thus theoretical balance change) in the front is probably made up for in control, as well as keeping a more consistent contact patch via reduced roll. It also reduces dive under braking, keeping the contact patch larger there too.
I'm not disagreeing with you at all. And I am not a suspension expert. But I don't see a reason to run a 1000lb rear spring for the street and even occasional autox/track. The rear spring rate is pretty high on this car to begin with due to its inboard position and leverage put on it by the LCA. I think the PP springs were too much for the stock shocks to handle initially as why a lot of people complained of the PP bounce. I will be testing it more as I go along. But from the few harder corners I've went around, the front and rear seam to get along pretty well.
Right, since the motion ratio is bad in the rear (iirc, .3 ish), the spring rates in the rear are much higher. Which means even though the rear is 668 stock, its effective spring rate is somewhere in the mid 200's. This isn't much rate at all.
People in ESP are running very high rear rates. Boardkat on this forums is going to be trying out 2000+ lb/in.
Ride height can be adjusted from stock to -3", and the system includes linear spring front and rear. Custom spring rates will be selected/included with each system, and the setup will be built around the type of driving, modifications, etc. the customer plans to use their car for. Progressive rear springs are shown in the picture Nick610s posted, however those were one of the many different spring rates/lengths we tested while the system was in development.
Terrific.
This must have been the post that was pending! Missed it! Im definitely enjoying my car more now! And onlookers seem to enjoy it more too!I'll be happy to post some pictures and answer any questions as well, but I'll wait for your review fist.
We're also putting together a video that includes some of the install as well as some footage of the suspension during the initial test drive. I'd be happy to post it on here if there's interest in seeing it.
Thanks again Nick! I do have to say I miss the car already.
Our rear system includes a linear spring and ride height adjuster that mounts in the factory location. The shock also mounts in the factory location and includes custom, shortened bumpstops. We have shelves of different length and rate springs available to match desired ride heights, comfort, etc.
Awesome! I'll text you soon! We got some comp orange GC stickers coming our way soon with your name on them.