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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sun, May-28-2017, 05:20:02 PM   #1
werfer
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Default Which springs for Koni Yellows 13.5F/13R?

The more research I do, the more I think Koni Yellows + springs would be perfect for me. But I'm still not sure which springs to go with. I want 13.5F/13R ride height. I DON'T want to run an adjustable spring perch. Looks like H&R will get me 13.5F but has a rake that leaves the rear sitting higher. What do people think about:

H&R up front and Vogtland in the rear?

OR

CSL springs with a 10-15mm spring pad in the rear?

I think the CSL springs have stiffer spring rates which should help prevent the car from hitting the bump stops over bumps right? They are 310lbs up front and I'm not sure of the rear. I think I remember reading somewhere that H&R are 200ish lb spring rates which seems pretty low. Not sure about Vogtland.
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Old Sun, May-28-2017, 05:31:37 PM   #2
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Default Re: Which springs for Koni Yellows 13.5F/13R?

I think Tein S Tech will get you close to 13.5f 13r. They lower 1.5f 1.3r. The rears at least will work.
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Old Sun, May-28-2017, 10:45:57 PM   #3
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Default Re: Which springs for Koni Yellows 13.5F/13R?

Think I'm gonna go with CSL springs. All the other springs are rated at less than 200lbs from what I can find and that just seems way too soft for that ride height. Ideally I'd like even more than 310lbs up front but I can't find anything that stiff without running a coilover setup.
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Old Sat, Jun-10-2017, 08:36:54 AM   #4
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Default Re: Which springs for Koni Yellows 13.5F/13R?

So I've heard of the top adjustable TC Kline's Konis for the rear (that also supposedly have better valving?). Just want to make sure these are the right ones:
http://www.tcklineracing.com/webdocs.../Details30.cfm
For the front struts, I should just go with the Koni yellows I can find cheapest on any site? There's no advantage to TC Kline in that regard? Tirerack is considerably cheaper right now.

Also, I am currently on KW V2 coilovers. What else will I need to get to​ convert back to a shock & spring setup? What else should I replace while doing this?

Thanks
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Old Sat, Jun-17-2017, 06:21:41 PM   #5
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Default Re: Which springs for Koni Yellows 13.5F/13R?

Quote:
Originally Posted by werfer View Post
I am currently on KW V2 coilovers. What else will I need to get to​ convert back to a shock & spring setup? What else should I replace while doing this?

Thanks
Anyone?
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Old Sun, Jun-18-2017, 11:10:35 PM   #6
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Default Re: Which springs for Koni Yellows 13.5F/13R?

top hats and spring seats.

can i ask why you're going back to a spring / shock combo?
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Old Mon, Jun-19-2017, 12:01:51 AM   #7
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Default Re: Which springs for Koni Yellows 13.5F/13R?

Quote:
Originally Posted by werfer View Post
So I've heard of the top adjustable TC Kline's Konis for the rear (that also supposedly have better valving?). Just want to make sure these are the right ones:
http://www.tcklineracing.com/webdocs.../Details30.cfm
For the front struts, I should just go with the Koni yellows I can find cheapest on any site? There's no advantage to TC Kline in that regard? Tirerack is considerably cheaper right now.

Also, I am currently on KW V2 coilovers. What else will I need to get to​ convert back to a shock & spring setup? What else should I replace while doing this?

Thanks
Yep and yep on the Konis. The TCK front konis are coilover only, won't work with normal springs so not an option anyway.

Assuming the V2s use stock front upper spring pads and strut mounts, you'd need lower front spring pads, front and rear bumpstops, and likely some/all rear spring pads. RSMs should carry over.

Oh, you'll need stock front sway endlinks, too.

However - a 13.5 front height is very aggressive for a non coilover setup and I'd recommend GC street plates to restore the loss of travel. Perhaps run the setup without at first to see how it feels and then go from there. But I think it may hit hard over big bumps without.

Edit - your existing RSMs won't work with the TCK rears, only standard koni rears. The TCKs have a 12mm shaft and thus require specific RSMs.

Quote:
Originally Posted by M3 dude View Post
top hats and spring seats.

can i ask why you're going back to a spring / shock combo?
I would guess comfort as the V2s are not.
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Old Mon, Jun-19-2017, 02:48:33 AM   #8
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Default Re: Which springs for Koni Yellows 13.5F/13R?

Thanks Eric. It will probably be a little while before I get around to doing my suspension refresh but I wanted to get all my ducks in a row. Already bought the front struts since the Koni sale was going on.

The v2s came on my car when I got it. They aren't bad but I don't see the purpose in having coilovers on my car since I won't get around to corner balancing it. Couple that with the fact that Konis + springs should be much more comfortable.
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Old Mon, Jun-19-2017, 06:23:42 AM   #9
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Default Re: Which springs for Koni Yellows 13.5F/13R?

Very nice!!
Iam in the same boat here!
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Old Sat, Jun-24-2017, 08:23:07 AM   #10
werfer
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Default Re: Which springs for Koni Yellows 13.5F/13R?

Quote:
Originally Posted by EricSMG View Post
However - a 13.5 front height is very aggressive for a non coilover setup and I'd recommend GC street plates to restore the loss of travel. Perhaps run the setup without at first to see how it feels and then go from there. But I think it may hit hard over big bumps without.
Newb question, but what do you mean by using GC street plates to restore travel? Will these raise the ride height? Will they add any NVH? I guess I don't really understand camber plates.
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Discussing Which springs for Koni Yellows 13.5F/13R? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)