Does anyone have any impressions on the new RS*R coilovers? I am thinking about a suspension upgrade. Can't decide if I should go with the 350Z RS*R Ti2000/Tokico D-Specs/Stillen rear camber kit combo or just go with a set of coilovers. Currently run Z H-Techs and stock shocks with Eibach sways. Will not be needing to do any height adjustments. Just looking to improve stance of car...needs to be a bit lower, and obviously to improve the ride and handling. My concern with coils is getting them set up correctly on the car so it makes an improvement and not make handling worse. I have read that each needs to be set up so the car is properly corner weighted. If not then it will throw of the balance of the car. I guess with spring/shock combo I can kind of set it and forget it. Never had coils before. Any opinions are appreciated. Thanks.

 

improve ride quality/handling - that generally doesn't exist.

the stiffer you go, the lesser the quality (assuming you want a soft ride as quality). but at the same time, the better the handling.

so what exactly do you value more?

 

What I meant, or should have said was the best balance. I know coils have much higher spring rates, but aren't the shocks valved to handle these? I am definitely not looking for a harsh ride and I do not track the car. Any recommendations?

 

tein basic (9kg f/r) or hks rs coils (8kg f/r)

 

KW Variant 2. I don't know anybody who has the V1, so no idea how it feels, but the V2 lets you adjust rebound so you can fine tune it to your taste. No need for V3 if you're not going to track the car.

They have progressive springs in the rear, so they're much more comfortable at low speeds. Being able to adjust the rebound will let you fine tune it to your liking based on the ride height.

 

linear or progressive? if i go coils, only want linear springs. do you know anything about the new RS*R coils? i know they use the Ti2000 springs.

 

thanks for info. if i went with coils i would want them to adjust for rebound and compression. also, only want linear springs. not of fan of progressive springs. they are more comfortable, but do not handle as well in higher speed turns. i prefer feel of linear springs when driving hard versus the trade off a stiffer ride in around town driving.

 

What you have now.

Tein H-tech 350z linear springs drop amount on G35 coupe .8”/.7”
Spring rates in LBS 358/375

What your considering.
RSR 350Z linear springs drop amount on G35 coupe 1.1"/1.1"
Spring rates in LBS 345/417

Drop amount isn't much different and the stiffness changes don't move you in the direction of really altering the car's handling much if at all. I would be more inclinced to suggest a bit of a trade off with Tein 350Z S-tech's.

Tein S-tech 350Z springs drop on G35 Coupe 1.2“/1.1“ (fronts are slightly progressive, rears are linear)
Spring rates in LBS 386/402 (estimated front intial rate is 327lbs)

The trade of is the front springs slightly progressive design, notice though that the rate spread is lower then normal at just 59lbs, this is because only 1 coil will bind to effect the rate change vs 3 to 4 coils on most progressive springs.

Otherwise you won't really be changing much with springs and shocks.

Coilovers, would afford you the opportunity to have something that kicks the suspension up to another level and really enhances the ride and drive experience. BUT, and this is the a really big but. You have to steer yourself around those products that look good on paper, but don't delivery proper or decent dampning. Cheap coilovers all too often are underdampned and oversprung.

I would recommend checking out Cusco Zero2's. You get a decent front rate increase, adjustable dampning (compression/rebound together), adjustable case lengths to adjust front ride height without effecting spring preload levels and while mainting proper piston stroke distances. The other system that comes to mind would be Zeal and Ohlins, but those are both really expensive. I could see trying out the RSR coilovers, I like the spring rates and the overall design. But it's still up in the air if they investing in the product and their R&D to get the dampning right. IMO their's less risk with them some going with some cheap coilover system.

 

I have never had a set of coilovers. I have always tried to match lowering springs with shocks and have made many mistakes. If I were to decide on coils, I would not want to make any mistakes on a purchase and have to spend even more trying to get it right the second time around. I don't know much about the RS*R system, except specs. I have not read any feedback from owners and I'm not sure about the performance. I am sure the quality is first rate, but isn't this their first coilover product? I would be more inclined to spend the money and get the right product first. What do you know about the Zeal Function X-s? Linear springs? More for street performance? adjustable for compression and rebound, true coilovers or like OEM setup? I know these are pricey. Ultimately what I am looking for is a setup for outstanding street performance, that offers damping adjustment for compression and rebound, not too harsh of a ride, about 1 inch drop all around and outstanding quality. Since I was always trying to match springs and shocks, that is how I came up with the 350Z Ti2000 and D-Spec DSP9 combo. I have no issues with the 350Z H-Techs. Ride comfort is good and they seem to handle similar to stock sport springs. My only issue is the rear does not drop quite low enough. The only reason I am looking to change is that I will need to replace stock shocks soon. Maybe it is time I really went for a noticable improvement. My only fear is getting the coils setup right. I guess I need some solid advice on coilovers since I am a noob to these. Thanks.

 

As much as I know the car will be better with a change to coilovers, that is the "right" coilovers,.........if you can work a hacksaw you can drop the rear of the car for free and have the rear drop your after. All you do is cut down the rear upper spring seat, which is what I did and have on the car now.

To answer on the Zeal setup. They are linear springs, adjustable for compression and rebound (not seperately), have exceptional valving that allows for good ride quality and contol with 560/448 spring rates. I cannot find the endless web site (parent company to zeal) so I can look up min and max lowering specs.

Here is a link to a review of the setup.

http://www.my350z.com/forum/showthre...highlight=zeal

Here is a link to a my350 sponcer web page for the product.

http://www.z1auto.com/prodmore.asp?m...ng&prodid=1293

Here is a direct link to pm Adam from z1auto, I recommend him as someone to talk to when it comes to giving honest frank answers, his recommendation's tend to follow the way I see things more then anyone else. Though he isn't against progressive springs as much as I am
http://www.my350z.com/forum/private....=newpm&u=11322

 

Damn, those Zeals are more expensive than I thought. My budget is not that high. Can you recommend something less expensive? What about HKS RS? My only concern with the RS*R system would be like you said about how much R&D has gone into their dampening. Do you know anyone who has thes? Do the coils adjust at top like D-Specs?

 

Not always. You also have to take into account valving if you're going with coils. Some coils ride better than others even if they have stiffer springs.

 

That is what scares me about the coilover setups. I see the higher spring rates and know that the dampening better be right or the ride is going to be too harsh for the street. The other problem would be if they are not damped correctly they will be too soft. I am starting to think that coilovers are best left on the track or for non-daily driven vehicles. Probably the reason I have never had them. I use to have D-Specs and 350Z H-Techs on my 03 sedan and it was just fine. I like the adjustability of the D-Specs and I have no need to make height adjustments. I may just replace OEM shocks with D-Specs and avoid making a mistake with a pricey coilover setup that I may not like. Everyone keeps telling me coilovers are better since the springs and shocks are matched up to each other to perform better, but it certainly sounds like a challenge to find "the one" that is right for each individual taste. And it is almost impossible to test ride the different setups I am considering. I really need to give this some serious consideration as I am sure this is a difficult issue for many of us to decide on. Anyone with coils they run daily on the street, please pass on your experience good or bad. Thanks.