Q - What options are there for the G sedan?
Anything currently on the market that fits the coupe or 350Z will also fit the RWD sedan. BUT, if it is not sedan specific be aware that anything from the 350Z will lower the sedan 1" more and coupe parts will lower the sedan 0.5" more than they list. The stock Z springs will lower the sedan ~1" and the stock coupe springs will lower the sedan ~0.5".
Aftermarket springs for the other cars will fit the AWD sedan, coilovers will not Note the springs will lower it 0.5" more than the RWD sedan.
Q: What is the best suspension system available?
Depends on what you are looking for (Performance vs Aesthetics). It is recommended that you go to the Tech Area, then Sub-Forum : Brakes, Suspension, Wheels & Tires
to review other members recommendations on various manufacturers.
For lots of pictures of different suspension setups look here:
Q: Will a lowered suspension system affect riding comfort?
Usually, the answer is yes. With a lowered suspension, regardless of purpose, you will feel more road feedback, the camber of your wheels will be affected, and you will have to adjust your driving style when approaching drive-ways, curbs, speed bumps, etc. Essentially everything will change, though the severity and what will affect you will vary based on your system and your driving style. Some drivers will actually prefer the road feedback as they can “feel” the quality of the road and can make split-second decisions as a result (Track purposes, touring, etc.).
Q - If I lower my car will I have uneven tire wear?
There are many aspects to alignment; camber, caster and toe. The G comes with some negative camber from the factory to help the car corner better. This will cause the tires to wear out on the inside faster than the outside but, at stock height its mild and normal tire rotation will help a lot. When you lower the car all three aspects are changed. The G does have some adjustment from the factory. Depending on how much you lower it you may want to look into aftermarket kits made to adjust your car back into the factory specifications. Regardless you will want to have your alignment checked and fixed as much as possible after lowering it. Many companies like Specialty Products Company (SPC), Kinetix, Stillen and others make kits for the front and rear. The front kits replace your upper A-arm as where the rears are camber arms and bolts for toe. The rear kits are quite a bit less money which prompts many people to just do the rears and deal with the wear in the fronts. Many members have staggered wheel sizes and the rear tires are more expensive also making the rears a good investment. You never “NEED” camber kits as long as you are willing to deal with the faster tire wear and are willing to pay to swap your tires around more often.
Q: What is the cheapest suspension system out there?
Looking for the cheapest usually means you’re sacrificing quality for price. However, there are deals to be found, group-buys, vendor specials, and even eBay (buyer beware).
Make sure you know a little information about the product you are buying ahead of time and for the most part…stick with major names because they are more than likely to back-up their product if something goes wrong.
If you still want to lower your car but cost is a factor, one low cost solution is to replace your springs (This only applies to models that came with the sport-suspension package) with “unrevised” 350z springs since they have the same spring rate. Your drop will be on average, 1” around, with only a slight camber to the wheels. Your ride comfort will be the same as sport stock or only slightly affected. More details on how to obtain springs, install, etc, can be found in the Tech Area. (Note – you can still install the 350Z springs with your non-sport struts but it will cause premature wear on them and your performance will suffer)
Q - Why does the front end of my car make creeking noises at low speeds going over driveways/speed bumps etc?
Check (or have a dealer/shop check) the compression rods which are known to go bad and can be replaced under warranty from dealer.
Q - How do I tell if I have sport suspension or not?
03-05 sedans will have red struts.
06' sedans someone help me out here
The sway bars made for the coupe and 350Z will also fit the RWD sedan.
*except for the 350 evo sway bars, they do not fit the sedan*
Strut Tower Bars
The strut tower bars for the 350Z will NOT fit the sedan.
Most front strut tower bars for the coupe will also fit the sedan. I don't believe the VRT one will but the other should depending on your plenum spacer. Some will require you to remove your engine cover.
See the Suspension section for more information
Bracing Bars (ie GT Spec)
The GT Spec front, rear and lateral bar will fit with the stock sedan exhaust. The rear lateral bar may not work with some aftermarket exhausts. The mid-4-pt brace will not work on the sedan at all.
2003 - 2006 - G35 sedan sport suspension spring rates - 314/342
2003 - 2006 - G35 sedan non sport spring rates - 283/308
2004 - 2006 - G35x spring rates - 283/355
More sway bar info:
Hotchkis: updated info on 1/3/08, thanks Texasscout
Construction: Front 1 3/8" (35MM) Tubular (Bar Weight 13.5lbs)
4 Position Adjustable; Rear 15/16"(24mm) Tubular (bar weight 5.5lbs)
3 Position Adjustable. Includes greasable bushings and brackets. Bars now come with welded retaining rings/collar stops The back bushing have grease zerks on them now. Front bushings still must be removed to be greased.
350Z & 03- 05 G35 Front:
Hole 1 = 1525 lbs/in (22% Stiffer than stock)
Hole 2 = 1845 lbs/in (48% Stiffer than stock)
Hole 3 = 2270 lbs/in (82% Stiffer than stock)
Hole 4 = 2855 lbs/in (129% Stiffer than stock)
06 G35 Front:
Hole 1 = 1525 lbs/in (5% Softer than stock)
Hole 2 = 1845 lbs/in (15% Stiffer than stock)
Hole 3 = 2270 lbs/in (42% Stiffer than stock)
Hole 4 = 2855 lbs/in (78% Stiffer than stock)
Hole 1 = 520 lbs/in (80% Stiffer than stock)
Hole 2 = 655 lbs/in (125% Stiffer than stock)
Hole 3 = 840 lbs/in (185% Stiffer than stock)
Approximate Price: ~$260
Pros/Cons/Experiences/Settings: some people complain about squeaking w/ Hotchkis (but I've read that you should just put more grease on them)
The bars do not incorporate bushing “stops” to locate the bar. Some people have noticed the bar shift to one side or another. The fix is to purchase a pair of “collars” from McMaster Carr (part Number?)
Construction: 1 3/8-inch diameter (front) and 7/8-inch diameter (rear) tube bars
Bushings: None included (re-use OEM bushings or buy aftermarket ones)*
Stiffness settings for the front/rear sways: from 7% to 70% stiffer than stock
Approximate Price: ~$275
Pros/Cons/Experiences/Settings: Excellent construction, excellent packaging & instructions, reasonable price, no noise. No cons. kenchan
drives on Front soft / Rear med. tgenius
drives Front med/ Rear med for his sedan.
*Polyeurethane Bushings compatible w/ Stillen sways:
Summit racing carries the bushings too for less than suspension.com.
Prothane part # 14-1115 - 13.99
Prothane part # 14-1116 - 19.39 Possibly backordered though
(info courtesy of sin4me)
*Energy Bushings for Stillen Sways:
ENS-9-5168R for the front 1 3/8" bar
ENS-9-5158R for the rear 7/8" bar
and they are $36+ shipped. (info courtesy of Jamaica2G)
Construction: cold formed, high strength aircraft grade steel, powdercoated finish
Stiffness settings for the front/rear sways:
Approximate Price: $360
Pros/Cons/Experiences/Settings: Front/rear bars can be purchased separately.
Construction: Front: 36mm, hollow steel, Rear: 22mm, hollow steel
Bushings: firmer bushings with higher density rubber
Stiffness settings for the front/rear sways
Approximate Price: ~$440
Pros/Cons/Experiences/Settings: Nismo has warranty
Construction: Front bar diameter: 34mm, Rear bar diameter: 22mm
Stiffness settings for the front/rear sways
Approximate Price: ~$350
Pros/Cons/Experiences/Settings: Million Mile Warranty
Construction: Front: 35mm, Rear: 22 mm
Stiffness settings for the front/rear sways: Front - 120% and 137% stiffer than stock. Rear - 173% stiffer than stock (22 mm).
Approximate Price: ~$470
Construction: Solid; Front bar diameter: 27mm, Rear bar diameter: 22mm; Powdercoated graphite finish
Stiffness settings for the front/rear sways: Fronts non-adjustable; Rears are adjustable
Approximate Price: $260?
Pros/Cons/Experiences/Settings: Front/rear bars can be purchased separately