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      06-07-2011, 09:05 AM   #1
jwise36
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Rear Suspension ride height- PLEASE HELP!

hey guys, new to the form

i have 2 12 inch subs in the trunk of my 2011 e90 328xi

i had them in my old car and transferred them over but now im regretting it

i love the music, call me a kid, but unfortunately it has lowered ONLY the rear of my car by about 1-1.5 inches

any suggestions how i can get rid of this problem? only lower the front? wont that effect the ride?

thanks everyone
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      06-07-2011, 09:09 AM   #2
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how heavy is the setup? pics this has to be hilarious
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      06-07-2011, 09:21 AM   #3
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Maybe you could get coilovers? Put them really stiff on the back?
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      06-07-2011, 09:22 AM   #4
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setting them stiff won't help. you need coilovers to raise the ride height, or lower the front.
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      06-07-2011, 09:33 AM   #5
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...toss the sub box and replace the oem speakers with a better setup that doesn't involve sub boxes.
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      06-07-2011, 10:04 AM   #6
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How heavy r those? Jeez
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      06-07-2011, 10:29 AM   #7
jwise36
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haha guys it really isint that noticeable, im just conscious of it and it bothers me, the car dosen't look all that off its just about an inch lower gap between the rear fender and the rim than the front. i have 2 12 inch JL w7s which weigh about 50 pounds each, then a 6 cubic foot box that takes up my ENTIRE trunk probably weighs about 100-150, then 2 1000 watt amps only about 15-20 lbs each and then an extra battery to power it all. i have the harmon kardon upgrade so ditching those would make no sense, theres no way i can achieve the bass i want without these subs, im hitting about 153.2 Decibels hahaha.
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      06-07-2011, 10:31 AM   #8
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the box is similar to this one but the fitment is perfect, custom trim panels, looks great they fire right into the cabin and are ported through the rear armrest

http://www.google.ca/imgres?imgurl=h...w=1272&bih=648
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      06-07-2011, 10:31 AM   #9
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you do know that the front is always higher right?

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      06-07-2011, 10:32 AM   #10
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Why do you need 2 w7s and 2 1000 watt amps and an extra battery?

That setup is more like 250-300 lbs to me.

Unless you used 1/4 in mdf for that box, a 6 cu ft box will weight close to 100 lbs. My 1 cu ft box weights a good 20-30 lbs....
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      06-07-2011, 10:33 AM   #11
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are there no suspension risers i could use with the oem rear springs? car does not have the sport suspension
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      06-07-2011, 10:35 AM   #12
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      06-07-2011, 10:36 AM   #13
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setup all in all is close to 280-300 lbs, 90 for both subs, 150 for the box, another 50 between amps and battery. i dont REALLY need so much bass but i really do love it, shakes my car apart the extra battery is not really necessary but it takes alot of strain off the factory alternator and battery so my lights dont dim when the bass hits
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      06-07-2011, 10:37 AM   #14
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box is way too heavy.
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      06-07-2011, 10:38 AM   #15
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anyone know anything about putting some h&r springs only on the front? would i have alignment issues? or putting them on front and rear and because they are stiffer the diference between the front fender gap and rear would be less?
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      06-07-2011, 10:38 AM   #16
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express705, you have to look at it this way, it would be the same if i were to have 2 adults sitting in my backseat, i never carry passengers in addition to the sub weight
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      06-07-2011, 10:41 AM   #17
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Quote:
Originally Posted by jwise36 View Post
anyone know anything about putting some h&r springs only on the front? would i have alignment issues? or putting them on front and rear and because they are stiffer the diference between the front fender gap and rear would be less?
if you are getting springs for the front only, youll need an alignment. your car will ride like a joke, and it wont be fun. if you get all 4 springs installed, you will still need an alignment, and it will still sit lower, just not as much, in the rear.

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Originally Posted by jwise36 View Post
express705, you have to look at it this way, it would be the same if i were to have 2 adults sitting in my backseat, i never carry passengers in addition to the sub weight
thats great, but the box is still too heavy. whats it made of?
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      06-07-2011, 10:43 AM   #18
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Well as someone mentioned before, the xi naturally has front rake (sits higher in the front). So by adding close to 300lbs extra weight in the back, you just make the rake worse.

Only way to fix it is to lighten your setup or get coilovers and set the rear height higher to level out the car...also has been mentioned.
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      06-07-2011, 10:44 AM   #19
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what he said!!!!!!! ^^^
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      06-07-2011, 10:47 AM   #20
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      06-07-2011, 10:52 AM   #21
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pics coming soon, ill snap some after work, the box is heavy because its 1. Ported meaning more material is used 2. the material has to be thick, you have no idea how much pressure builds in the car let alone my box. i broke the gas cap (the little pin that clicks when you push it in and releases when pushed a second time) because the pressure that built up behind the panel literally popped it out

think ill go with h&r all around and align it, not in the market to spend money on coilovers
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      06-07-2011, 10:54 AM   #22
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You'll still have rake with springs.....And you'll probably rub depending on your wheels setup.
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