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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 Fri, Oct-05-2007, 01:28:31 AM   #21
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Originally Posted by Cleveland View Post

KW is also the #1 aftermarket suspension company in Europe, the #1 racing team suspension supplier (including the 2007 GT2 24H of Lemans winner), and they are the EXCLUSIVE OE supplier to Mercedes-Benz for their top of the line AMG cars.

True, they are huge in FIA with respect to the WTCC.
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Old Fri, Oct-05-2007, 01:35:46 AM   #22
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It's unfortunate for TC Kline that they can't really fix that problem themselves. That's because they outsource those parts. Any problems aren't easily correctable because the manufacturer (KONI) is in control.

That's why I love the KW products...

KW Variant 2 & 3 coilovers are the best overall coilover kits on the market. (my opinion) They aren't cheap by any stretch, but they are worth every penny. They have the best material construction quality of any coilover kit built for our E46 M3's. (regardless of cost)

KW designs, manufactures, and tests suspension systems for each individual name plate (Mercedes-Benz, BMW, Jaguar, Audi, Porsche, etc.), and they also design and valve ALL suspension dampers to each individual MODEL within that brand.

I can't disagree more with your assessment of the KW damping parameters. They design, manufacture, and extensively test each and every system they sell for street driving. (you can't ask for more than that)

All of KW's primary suspension components are built in-house. (struts, shocks & springs) They do not outsource all the coilover components like 95% of their competitors. That gives them a substantial leg up on the QUALITY CONTROL that other company's simply don't have in place. They invested millions of dollars to have that kind of advantage in the marketplace.

ALL KW BMW Coilover kits are made in Germany and have been TUV certified for use on public roads. This is the highest quality certification a company can receive in Europe. It requires an expensive and time-consuming process to seek this type of endorsement. Every product is throughly stress tested past the level it would ever be subjected to on any public road. All aspects of the kit are tested and retested again (coils, strut cartridges, shocks) to insure it meets the TUV's stringent requirements. Not only did the KW kit pass the TUV's punishing requirements at the highest settings, it passed them on everyride hight setting. (including the lowest possible setting)

Now ask yourself...what other coilover kit (for our M3's) has undergone this kind of independent quality control testing regimen?

The KW coilovers are impervious to rust, corrosion, road salt, acid rain, etc... because the strut housing and shock bodies are built with 100% T-304 stainless steel materials. (including all the mounting hardware) All reinforced brackets and high strength bolts (10.9 rated) 6061 aluminum alloy ride height adjustor's that are anodized to prevent corrosion. 100% Teflon internal seals to prevent leaking struts and shocks. These features are extremely rare in the BMW aftermarket. I don't know of other aftermarket company that can make these claims.

They are also an OE spring supplier to EIBACH. Ironically, some of the Eibach springs they manufacture, end up on their competitors kits!

Did you know that Obioban?

KW is also the #1 aftermarket suspension company in Europe, the #1 racing team suspension supplier (including the 2007 GT2 24H of Lemans winner), and they are the EXCLUSIVE OE supplier to Mercedes-Benz for their top of the line AMG cars.
I attempted to address the issue of quality with the first line of advantages of KW: "High quality materials and manufacture"

Just as a preface (not to cleveland, more to everyone who might think I'm a sellout now that I'm a sponsor), I have no incentive to sell TCKs over KWs-- in fact, KW has the largest margins of all the kits.

Koni shocks, which both GC and TCK use, are TUV certified: http://www.koni.com/24.html

They also come with a lifetime, unlimited millage warrantee for the first owner

I suspect the GC and TCK kits will not ever get TUV certified. TUV is a European standard, while TCK and GC and both American companies. Nor does there exist a similar certification in the US for them to apply for.

I mentioned the rust proofing in the KW advantages. I didn't mention it in the TCK advantages even though all their shocks except for the SA rear are Inox (I didn't mention it because the SA rears aren't Inox)

More to the point, making the entire kit in house is not necessarily going to lead to the best end product. TCK, for example, outsources shock production to koni, arguably one of the two best shock producers in the world (the other being bilstein). Yet TCK can still get their own custom damping, which seems to be me like a best of both worlds situation. Likewise, they outsource their spring production to Votland and their super trick VVS wire springs-- arguably the one of the best springs made for use in our car. The rest of the pieces are made by TCK in house, and are all of very high quality.

Which leaves, I believe, our difference in the opinion of their damping... which may be why you made this post. I think I put my opinion (I prefer the TCK/GC style of damping, geared towards linear springs and allowing high spring rates to be swapped in) in as one of the objective parts-- it is now removed.
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Old Fri, Oct-05-2007, 02:08:48 AM   #23
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KW suspension components are fully track tested on the Nürburgring. (Nordschleife)
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Old Fri, Oct-05-2007, 06:00:58 AM   #24
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Originally Posted by NPalacioM3 View Post
True, they are huge in FIA with respect to the WTCC.
Racing shocks have very little in common with street kit shocks
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Old Fri, Oct-05-2007, 06:45:10 AM   #25
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Originally Posted by Hawse771 View Post
What's AST? price? links?
I just responded to your PM on this, but for everyone else's benefit,
http://www.ast-suspension.com/

Not a whole lot of actual experience with these yet, as they're very new, but they're not really shaping up to be a street suspension.

I could be wrong, though, we'll see
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Old Fri, Oct-05-2007, 07:03:36 AM   #26
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great info's.
i have a question.
even though you guys do custom valving, the koni is limited to 750lbs???
i am planning to use 800-900lbs springs for my next setup, that means, koni's won't work?
i am so confused about their rebound characteristics..
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Old Fri, Oct-05-2007, 07:08:18 AM   #27
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Originally Posted by jshin80 View Post
great info's.
i have a question.
even though you guys do custom valving, the koni is limited to 750lbs???
i am planning to use 800-900lbs springs for my next setup, that means, koni's won't work?
i am so confused about their rebound characteristics..
Yeah, that's the limit of what the shock can control.

The custom valving determines the ride quality of the shock, rather than the limits of what the shock can control.

If you're going to go that stiff, you need to go to a more track specific setup
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Old Fri, Oct-05-2007, 07:19:32 AM   #28
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that was a great write up, it really helps me with my decision on which set to go with..thx!
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Old Fri, Oct-05-2007, 07:29:45 AM   #29
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another good info.
thanks everytime~~~~

Quote:
Originally Posted by Obioban View Post
Yeah, that's the limit of what the shock can control.

The custom valving determines the ride quality of the shock, rather than the limits of what the shock can control.

If you're going to go that stiff, you need to go to a more track specific setup
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Old Fri, Oct-05-2007, 12:51:49 PM   #30
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Quote:
Originally Posted by Cleveland View Post
KW suspension components are fully track tested on the Nürburgring. (Nordschleife)
KW FTMFW!!!! Thanks Cleveland...
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Discussing Objective suspension comparison with subjective target audiences 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)