Looking for feedback on Xida spring rates - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 07-12-2016, 06:13 PM   #21
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Originally Posted by drizzay222 View Post
How heavy is your car? I've had good experience with 800/500 and 225 Rival S on MSM with full Interior. I called 949 before I ordered and after describing my car and intention to have a decent autocross/street-able car was recommend that spring rate. I thought that might be too much when I ordered but was surprised how well they ride. Overall stiffer, harder, and more communicative on street (isn't that why we get them) but actually takes potholes better in the sense that the car feels less fragile and unsettled than the original bilsteins. Setting dampers at 6 or 8 on street can handle some rough roads and that's with a pretty low 4.25 pinch weld height. You might want to contact 949 and describe your vehicle and intentions and see what they recommend.
I'm definitely not stripped down, but I've done a 1.6 dash swap, so dropped quite a bit of weight there, removed the soft top. However, I added door bars, butterfly brace, Blackbird GT3, etc. I'd say I'm close to the stock 1994 weight, if just over.
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Old 07-12-2016, 07:29 PM   #22
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The reason many of us recommend higher spring rates, is because we are very travel limited.
By choosing a higher spring rate, which I'm glad you did, you keep off of the bump stops, and let the shocks do their job.
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Old 12-07-2016, 03:35 AM   #23
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Would love to hear how are they working.

Based on my experience, presently on 700/450, and having owned 450/300, and few more on Miata specifically, not to mention many other cars with nice suspension...
To recommend 700/450 for California backroad boggles the mind.

Maybe physics was bent, and new rules written, rather than challenge based on own experience and experience of many more, I am keeping an open mind and eyes wide open.
Chiming in for feedback how do the coils work so far on bumpy roads? Especially when aggressively driven.

Thank you.
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Old 12-07-2016, 08:22 AM   #24
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Originally Posted by alpinaturbo View Post
Would love to hear how are they working.

Based on my experience, presently on 700/450, and having owned 450/300, and few more on Miata specifically, not to mention many other cars with nice suspension...
To recommend 700/450 for California backroad boggles the mind.

Maybe physics was bent, and new rules written, rather than challenge based on own experience and experience of many more, I am keeping an open mind and eyes wide open.
Chiming in for feedback how do the coils work so far on bumpy roads? Especially when aggressively driven.

Thank you.
Are your expectations such that that all suspension systems are the same, therefor should use similar rates?
Or that on specifically a Miata, all dampers are the same?

To me, the Xidas running 800/500 are more comfortable than the tokico illuminas with FM springs.

Last edited by psyber_0ptix; 12-07-2016 at 08:35 AM.
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Old 12-07-2016, 09:04 AM   #25
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Originally Posted by psyber_0ptix View Post
To me, the Xidas running 800/500 are more comfortable than the tokico illuminas with FM springs.
This is interesting to hear. I have both Gen2 Xida with 700/400 and illuminas/FM springs on 2 of my cars. I need to do a back to back drive one day to see which one I prefer on the street.
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Old 12-07-2016, 09:21 AM   #26
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The XIDA is noticeably stiffer, but the Tokico's where just harsh in comparison. They where used, but was still in fantastic condition (Thanks Vlad) but I never knew until I switched. Next time you're up in the area, feel free to test drive my car. Though it'd be winter mode and I don't know how comfortable I feel about these rates on snow tires.

I thought about getting swift springs in the 750/450 area but honestly, I have no regrets because it felt great on 245 VR-1's
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Old 12-07-2016, 03:53 PM   #27
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Totally apples to orangutans but after getting my Miata (XIDA 800/550) on the road a couple weeks back and after driving it back to back with my stock Fiesta ST on the same roads - my Miata feels LESS violent on bumps than my Fiesta, but to be honest that has a lot more to say about the tires and the sidewall height and perhaps the quality of the damping than spring rates.

I'm also interested to hear Astral's thoughts post installation. In retrospect I probably should have gone 700/400 (just because I don't race other than autocross) but I am perfectly happy with my choice as it stands.

Last edited by Chiburbian; 12-07-2016 at 04:15 PM.
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Old 12-07-2016, 08:23 PM   #28
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Totally apples to orangutans but after getting my Miata (XIDA 800/550) on the road a couple weeks back and after driving it back to back with my stock Fiesta ST on the same roads - my Miata feels LESS violent on bumps than my Fiesta, but to be honest that has a lot more to say about the tires and the sidewall height and perhaps the quality of the damping than spring rates.

I'm also interested to hear Astral's thoughts post installation. In retrospect I probably should have gone 700/400 (just because I don't race other than autocross) but I am perfectly happy with my choice as it stands.
If you want to swap shoot me a message. I just picked up a used set of Xidas with 700/400 rates and probably should go stiffer based on running 100tw tires.
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Old 06-08-2017, 12:53 AM   #29
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I went with the 700/400's. Will be reporting back.
How are you liking those spring rates?

Last edited by kronikker; 06-08-2017 at 10:02 AM.
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Old 06-08-2017, 04:01 PM   #30
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I just ordered the Xidas for my NA8, going to be on15x8 wheels with NeoGens. Went with the 700/400 rates. No other suspension mods, but plan on fender braces and hollow front RB bar, no rear bar, and FM alignment specs. Is a 4 inch pinch weld ride height ok for this on the street?
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Old 06-09-2017, 12:41 AM   #31
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Originally Posted by CorruptGarage View Post
I just ordered the Xidas for my NA8, going to be on15x8 wheels with NeoGens. Went with the 700/400 rates. No other suspension mods, but plan on fender braces and hollow front RB bar, no rear bar, and FM alignment specs. Is a 4 inch pinch weld ride height ok for this on the street?
Why not use 949 alignment specs for the suspension you bought from 949Racing, which outline recommended pinch weld height for optimal damper performance?
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Old 06-09-2017, 12:47 AM   #32
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Quote:
Originally Posted by psyber_0ptix View Post
Why not use 949 alignment specs for the suspension you bought from 949Racing, which outline recommended pinch weld height for optimal damper performance?
Not sure of the point, if the spring rates chosen don't go with the tires being used.

But otherwise, yeah. What he said.
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Old 06-09-2017, 02:19 AM   #33
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FM alignment specs are meant for old people that just want their wine and cheese at a slightly lower ride height.

It also ties into the fact that the FM rear sway bar is way, way too big and causes huge oversteer... unless you go with their weird alignment. I have ran both alignments and the 949 dual-duty alignment is way more fun.
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Old 06-09-2017, 01:06 PM   #34
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Personally, I would have recommended 550/350 for street especially for ZII's. ZII's arent in the super 200 category. This is coming from me using 700/400 for track use with R compound. I have another miata with stock suspension, all season tires for street use. The softer you can get away with the more you can enjoy the miata on the street IMO.
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Old 06-09-2017, 02:06 PM   #35
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Personally, I would have recommended 550/350 for street especially for ZII's. ZII's arent in the super 200 category. This is coming from me using 700/400 for track use with R compound. I have another miata with stock suspension, all season tires for street use. The softer you can get away with the more you can enjoy the miata on the street IMO.

I had read (misread?) somewhere on here that 700/400 rates on Xida was very streetable due to the dampening of those shocks. Was I mistaken? Did I **** up getting coilovers at all? I spent the past week reading how revalved Bilsteins and Konis were big before a proper coilover like those from fcm and 949 came along, rendering those to be just poorfag compromises. Should I go ahead now and order another set of springs before I install these?
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Old 06-09-2017, 02:09 PM   #36
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Ride quality isn't really the problem. They'll ride fine. And not roll at all in corners because you'll run out of grip due to an unbalanced tire choice. Neogens would be the weak point with any available spring rate with Xidas. Like safety, suspension is a system, including your tires.

700/400 is fine. Just get some tires worthy of them in the future.
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Old 06-09-2017, 02:39 PM   #37
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Thanks for the spoon-feeding, gentlemen. I'll add some better tires after I wear these things out and get a better feel for the car. I will also use the 949 dual-duty alignment specs.
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Old 06-09-2017, 02:43 PM   #38
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I had FCMs on 500/350 before my 700/400 Xidas. The FCM's rode a teeny tiny bit better on the street, but were quite floppy on the track and honestly a bit too floppy on bumpy roads as well.

I prefer the Xidas in every scenario except daily driving. So if the vehicle is a daily driver, you might be happy with softer springs. if it's a weekend car for canyon carving, 700/400 with Xidas is the way to go.

As another note, I found that 700/400 with the shocks on full soft really didn't ride that well. They ride better with at least a few clicks from soft to better match the spring rates. I bet with 550/300 rates, the softest damper setting would work great... but I don't KNOW that.
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Old 06-09-2017, 02:46 PM   #39
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Kitty awarded for being a polite and open-eared n00batron.
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Old 06-10-2017, 10:09 AM   #40
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800/500 on RComps was still very streetable IMHO. But I also removed power steering and things like.

You just have to determine what you are really going to use the car for and what compromises you are willing to make vs street/track/AutoX.
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