stiffen up rear suspension

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themagicman321
Posts: 4
Joined: Sun Nov 06, 2016 9:01 pm
Car: 03 g35 sedan

stiffen up rear suspension

Postby themagicman321 » Tue Mar 07, 2017 1:09 am

Hello, I need to stiffen up my rear suspension, as I have a big sub box with two heavy subs, and I put two amps, capacitor, and want to carry a few tools, and I always end up packing my car with crap I buy, or go to deliver motorcycle parts, or car parts...so my car squats a bit in back...what is the best way to get it a little stiffer? All I ever see anywhere is stock springs and lowering springs...not interested in lowering..car is low enough as it is...cant even get my floor jack under the front frame rail unless I drive up on a board on the one side I am going to jack up...I dont believe it is lowered...it is a 135,000 mile 03 sedan that was owned by an older person(not that I am young, but they were older than me)...thanks in advance!! oh yes I just put new struts all the way around-just stock replacements...so they have less than 5000 miles and work great..also new tires same time and are a touch larger than stock...


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centralcoaster33
Posts: 2772
Joined: Tue Apr 05, 2005 10:41 am
Car: 240SX #5-1997
Location: Central Coast, CA

Re: stiffen up rear suspension

Postby centralcoaster33 » Tue Mar 07, 2017 1:45 pm

Higher spring rates and stiffer dampers of equal length to your current suspension sound like a good idea. You may need to find a similar sized, but much heavier car to get swap-able parts. I don't know what that specific vehicle is. You may have to do some trial and error. How much do you think all your stuff weighs? Have you asked a suspension shop?

themagicman321
Posts: 4
Joined: Sun Nov 06, 2016 9:01 pm
Car: 03 g35 sedan

Re: stiffen up rear suspension

Postby themagicman321 » Tue Mar 07, 2017 5:34 pm

No I havent asked anybody except right here..just thought of it late last night and figured I would post it, sure there are some g35 experts on here, that can tell me which springs to use..

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centralcoaster33
Posts: 2772
Joined: Tue Apr 05, 2005 10:41 am
Car: 240SX #5-1997
Location: Central Coast, CA

Re: stiffen up rear suspension

Postby centralcoaster33 » Wed Mar 08, 2017 2:17 pm

Okay, I gotcha. Yeah, someone may notice this thread and have the knowledge you're looking for. I wasn't suggesting you redact the question here, just that you ask a suspension shop in addition to asking here. Like looking around in more than one place. Anyway, how much weight do you think you've added? 500 lbs? 800 lbs?

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crossbones668
Posts: 20
Joined: Mon Feb 11, 2008 10:55 am
Car: 1994 infiniti J30, 2005 infiniti G35 sedan

Re: stiffen up rear suspension

Postby crossbones668 » Thu Apr 13, 2017 7:57 pm

If you switch over to Bilstein struts it will stiffen it up. Not cheap, but it was worth it.


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