Found these on craigslist, called the guy u and he has a few sets left.

These are seriously rare and excellent quality springs.

Check them out......

Go to Orange County Craigslist and search 'Racing Dynamics E31'

Cheers

What's good about them? Tia!

I picked up a set but haven't installed them yet.

They are Progressively wound by RD themselves who are a world known BMW tuner.

They give such a great ride.....excellent handling whilst still providing a comfortable drive.

They are Progressively wound by RD themselves who are a world known BMW tuner.

They give such a great ride.....excellent handling whilst still providing a comfortable drive.

So, Im guessing that you have them on your car...

Could you give us a little more information about their ride? I have a car with the Dinan springs and a car with the H&R springs... I can't stand the H&Rs and want something decent to replace them with... wish I could find a set of the Dinans.

-JRW

They are Progressively wound by RD themselves who are a world known BMW tuner.

They give such a great ride.....excellent handling whilst still providing a comfortable drive.Is RD a 8-Series tuner? Or just riding the band wagon? I know about the K55 already, It's only been talked about and nothing proved! Does it have RD springs? I had them on my E24's and liked them but the 8 is so different and i need to know the spring rates compared to stock, This way we know where they stand, Not chewing on you, Just wanna know if there worth replacing what i have already because i'd be in it for 2 pair, And it's a great price! Thanks for the reply.

Ed should have my set of springs next week to test against stock: They'll probably get there right when he's going to his daughter's wedding. At that price I'm trying them blind. My bet is that they're a bit stiffer than stock CSI which is what I was gonna use anyway and anything is better than H&R's. In talking with JRW he's confirmed yet again that they're probably the worst you could put on the rear of an 8. Interesting trivia (http://racing-dynamics.com/Localized/International/Series/8/8_E31/E31_Trivia/RD_Int_E31_Trivia.htm)

He say's that CSi springs are the worst? They take a lot of strain out of the shock tower being stiff the way they are, I would'nt trade them for anything but M-Technic, Unless RD or something comes along stiffer, They work good for my set up. The H&R's are soft but with Bilstiens, It's a very comfortable ride.

Hope you don't think I said CSI springs were the worst!!?? I said H&R rears were the worst!

I have no complaint against CSI springs, if you want lower then they provide there are other methods.

Load on the shock tower? stiffer springs do help a bit BUT the shock valving is the main issue. if valving is set high the instantaneous pulse exerted on the tower will be high no matter what the spring rating is. Of course if you are running H&Rs and constantly hitting the shock tower with the bumb stop, only a matter of time.

OhNo Ed! I was just replying to rcrads post of my experience with CSi springs, Sorry! I should of quoted him.

No problem!

C'mon Eights....... you've been around enough to know exactly what's going on. Read what I said. H&R's suck for the rear of an E31, not CSI's. Real world experience and opinions of Ed's and JRW's about the HnRs tell me not to make a mistake on my car. I'm changing anyway as are others, so for me to have an opportunity to put on a good rare set I think is a plus. BUT... since Ed will tell the tale with his spring dyno long before they even get put on, why don't we hold the controversy and see. It won't be the first E31parstsmistake I've made, but they're sure as hell better than stock I have now.

I have clearly stated that the H&R's are worse then stock.I even have the rubber spacers so that I don't ride on teh bump stops... but they are just the worst...

I hope the RD springs are better... can they really be any worse?

-JRW

Here we are on springs again ... I know we've beat this to death ... but can't recall it being put to bed... the threads seem endless.

Ed, in your opinion what is the hot set-up that is reasonably available?

Yo,
Rod

Here we are on springs again ... I know we've beat this to death ... but can't recall it being put to bed... the threads seem endless.

Ed, in your opinion what is the hot set-up that is reasonably available?

Yo,
Rod

Well, Im not Ed... but my stage III Dinan setup handles really well. Its well balanced and isnt too stiff for daily driving.

-JRW

C'mon Eights....... you've been around enough to know exactly what's going on. Read what I said. H&R's suck for the rear of an E31, not CSI's. Real world experience and opinions of Ed's and JRW's about the HnRs tell me not to make a mistake on my car. I misread about the CSi's, Ooopz!:stickoutt H&R's and Bilstiens is a comfortable ride to me, I liked it! just wasn't what i was looking for in performance on the rear.

Here we are on springs again ... I know we've beat this to death ... but can't recall it being put to bed... the threads seem endless.

Ed, in your opinion what is the hot set-up that is reasonably available?

Yo,
Rod

The discussion keeps on going because it's subjective. For instance the general concensus is that H&Rs are too soft for our cars. It's substantiated by hard data from Ed's comparison sheet and also his experience of many replacements on customer's cars, as well as JRW having two cars side by side with Dinan/H&R and he can't wait to change from the latter. It doesn't make Eights wrong at all .. he liked them and I might too if I tried that combo but won't because they don't work for the particular stance I want for my car. 'Hot set-up' is affected by what's available. I want the Dinan Stage IIIs but can't get'm (of course I'll find a set right after I've changed) Reasonably available-meaning you can make a phone call and order a set easily is limited pretty much to Eibach, H&R, and OEM. Personally I learned a lot from earlier discussions as to how certain springs worked with camber plates, etc. and had resigned myself to having a pair sitting around because OEM (CSI) is the only of the above group you can buy in pairs that I'm aware of and I was actually going to use H&R for the front. The window opened for the RDs to be had at a great price and provides a unique opportunity to add their specs to Ed's database, which is the only of it's kind anywhere. I'll end up with a pair sitting anyway when I see how the Hartge's I have stack up to the others and at the end of the day I'll have my (not the) hot set-up.

Randy,

Pulled the trigger and sent you the payment for a set of RD springs, hopefully they will be a good investment.... thanks for your help