Here it is.

http://www.the370z.com/brakes-suspen...ion-chart.html

I'm a bit surprised there is this much discussion on this point but, yep, well known fact that if you remove some of the lever arm advantage the wheel has over the spring (go from bucket to coilover) then you need to reduce the spring rate to maintain the same wheel rate :) .

I have a pretty effective Aeromotions 72" wing and a 2.75-3" splitter and run 20k/9k (rear coilover) with good results. I do run some rake but the ride height is only slightly lower than stock. Lots of front overhang with the splitter and Stillen front end limit me. I don't want to get outside the optimum travel ranges on the suspension anyway.

I saw a huge gain from installing the Trackspec hood vents; more than I expected. Already with a partially boxed 34 row oil cooler, it seems like adding the venting has dropped oil temps by at least 10F.

The next aero mod on the list is adding vertical air dams in front of the wheel arches -adds pressure on the top edges of the splitter, keeps front tires out of the airstream, reducing drag, and reduces wheel arch pressure -reducing lift and improving brake cooling flow, I hope- and splitter fences to box in the splitter ends to keep the air from rolling off the side.

This is the setup I am looking for, I have 21kg front 7kg rear, thinking about 9kg rear before I add aero parts.

here is a nice article regarding choosing spring rates that helped me get started on my build.
How To Choose Spring Rates For Your Car | Speed Academy

Nice!:tup:

For chits and giggles. I measured my ride height. It's 27 front and 27.25 rear. Remember that I'm on stock Nismo coils and my tire selection.

Something you may enjoy.

Nice video as I have seen it before. It is crazy to see how Sasha's car has progressed since that video.

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Are you going to go to a wind tunnel? Interesting data. My car dang sure needs to go.

Enjoy this Hotrodz….

Back to the top.

Anybody have any new revaluation or lessons learned. I hope to be adding content in the next month or two. Going to get the Z suspension turned and mapped by on the best suspension shops in SoCal.

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Where are you taking it? Westend?

Nope WR Technica! The shop does mostly Porches and super cars. He races a 350z and knows our platform.

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Yep, that was going to be my second guess, almost made it my first. My buddy takes his Porsche to them.