E70 Lowering Options - HELP..
 

Okay, so I’ve read the long thread on here about using H&R lowering springs (https://xoutpost.com/bmw-sav-forums/...lots-pics.html). I know Eibach makes a set of springs. I’m interested in dropping about an inch, but without sacrifice to existing ride quality. As much as I have searched and read online, I can’t seem to find any definitive answers on how the ride quality is affected.

I’ve also not been able to find out much about a multitude of other options:

AC Schintzer (https://www.ac-schnitzer.de/en/bmw/x...-e70-3552.html)
ISC Triple S Lowering Coils (https://iscsuspension-na.com/lexus-w...ing-p126116224)..

The AC Schnitzer Coils are of course German origin, and have TUV certification papers online, meaning they have probably gone through much more thorough testing that many other options?
And the ISC Triple S coils say they are specifically designed for “Comfort in mind and to work with factory shocks”

Making both of these options interesting..

And then there are so many more I can’t seem to find anyone using either..

Vogtland Springs (https://www.americanspeed.com.au/vog...wering-35mm-fr)
Megan Racing Springs (https://meganracing.com/suspension/t...-ls-bx507-4710)
Dinan Racing Springs (https://www.dinancars.com/product/d1...0-x5m-e71-x6m/)
And their ride quality and handling kit that is supposed ot be paired with their springs (https://www.dinancars.com/product/d1...0-x5m-e71-x6m/)

And then I also came across these ‘GodSpeed Project’ springs (https://godspeedproject.com/traction...0-2007-13.html), which are the only ones I’ve found that actually list a spring rate, but because I have nothing to compare it to (even a stock spring rate), it’s pretty meaningless..

I’ll be honest, the ride is already on the firm side (which I like), so I really don’t want to go any firmer..
My main objective is reducing the wheel well gap, but I’m not willing to mess up the ride and handling dynamics to do it..
As such I really don’t want to go more than an 1” lower..
I don’t want to end up bottoming out going through severe dips in the road at speed, something she currently handles very well..
Nor do I want to have to worry about being able to properly align the car..

Anyone have any experience with or know anywhere to find more information on any or all of these other options?

Anyone know the spring rates for the stock springs? And linear vs progressive?


Would be most useful to know in order to then specify replacements/performance upgrades.


With other performance cars Ive been into, this is essential. Marketing blather is just that.


Frankly, I wouldnt be the least bit surprised if they are all the same, or very close


So I would CALL the guys at godspeed. Id bet $$ they know factory specs... AND honor them with your business if they have a product that works

Best way to reduce wheel well gap is oversized tires :-)
I can't find the thread but it makes the x5 look like the Dakar rally, not nasty like those jeeps with oversized tires.

yup. meaty and tough. Not like a stripper on Lucite heels.


Who WAS that guy?.....

I'm thinking of going with eibach springs and B8 shocks up front and lowering the rear via computer

Dinan springs are only for x5m

anyone know how sport suspension shocks differ from regular shocks?

https://www.realoem.com/bmw/enUS/sho...diagId=33_1378

Does BMW pair them with unique sport springs? or are the springs the same sport vs non-sport?

I have no idea. maybe sport suspension is shocks and springs are what the X5m comes with?

Oversize tires change the final gear ratio. Acceleration will be slower to some degree. Wider tires should be on wider rims to maintain handling characteristics. I suggest the H&R lowering kit and spacers. Doing both will get you where you want to go. There shouldn't be any difference in the ride quality as the lowering springs are the same spring rate as stock. It is also the least expensive route. After you have installed the springs and spacers you will need to get an alignment.

H&R is too aggressive of a drop after they settle in. ideally id like the dinan springs but will settle with eibach