E90 H&R Sport Spring DIY Install

for the left side we remove the 21mm nut and bolt, 10mm control arm sensor and 19mm strut nut.

for the right side we remove the 21mm nut and bolt and the 19mm strut nut.

there is only 1 control arm sensor, that is located...

I have an e92 335i, i used this diagram to do my springs. The front springs were pretty easy to use, i followed those instructions and for the most part it was pretty accurate. The rear however i realized is easier if you remove the 21mm near the strut and bring it down from that end. it's much easier and you don't have to worry about the exhaust being in the way.

Just did this for my fronts today. Ran out of daylight to do the rears.

Just a heads up!

The front springs are literally almost twice as large as the H&R's (I have the sport springs) so compressing the stock spring (in this method) will by far be the hardest part.

Everything else is very straightward and easy.

http://www.ecstuning.com/BMW-E92-335...1/Video319-HD/

This video made the rear install so much simpler in my opinion. I LOVE ECS TUNING!!!!

This is a great thread, I will be using this once I order my h&r springs thanks

Somehow your rims changed during your shock install.....

Silly, basic, and embarrasing question. How the heck do you get the bolts in the suspension to move? After I got the wheel off the only bolt I could remove was the rear bolt holding the bottom of the strut. Nothing else would even budge, no matter how hard I tried. Is there a secret for home gamers, or do I need special shop tools and access to a lift?

Just a good amount of force

This. Would've saved me a couple hours!

BTW, it's been 3 years and my Koni FSD/Eibach setup is still killing it on my DD!

Bump and a shout out to the OP for the write up. Pretty straight forward DIY that took me 4 hours all the way around. I have a 2006 325i and put the Eibach Pro kit on. Some advice is to grab 3 coils on the front and tighten all the way down. Have a friend put some pressure on the front end assembly and move the strut out from under the car.

On the back, we removed the 2 nuts holding the muffler on. This allowed us to put enough pressure on the muffler to get the bolt out from the carrier. Take your time, drink some beer, and you can easily get this done and save $$$

Saved a coupe hours? Wow.. When I wrote this DIY 8 year ago, the fronts took me less than a couple hours, with figuring out how to do it, documenting, AND taking these pics. I used this method on numerous friends cars, including the 135i that I traded that e90 330i for, and also on my M3.

Loosening/detaching the control arms virtually guarantees a substantial alignment is needed, whereas this method leaves the geometry pretty darned close to same alignment specs, yet adds some negative camber.

I'm just glad that folks get to see the underpinnings and feel encouraged to take this on themselves still.

Maybe more like "hour." Using a spring compressor inside of the fender well is a total PITA. And FWIW, my alignment was completely insane after doing this. Thanks again for the DIY!