Not happy with Handling

[mikey914]

What’s the best way to improve handling for these cars? I bought brand New KW DDC with thoughts that it would be better handling wise but it’s really no different than my OEM competition suspension was. Don’t get me wrong. DDC rides phenomenal, I think better than oem, but it’s still a little sloppy when flooring it WOT on the roads.


My question is, what other steps can I further take to improve handling more? Any good parts to get?

[Joy15779]

I did a revolution installing toyo r888r

[Theruleslawyer]

A camber shim kit can help if you're losing you camber setting. There are a couple big bushings in the back you could replace. Still it sounds like a tire issue. Does sloppy mean just breaking traction or something else.

[mikey914]

Originally Posted by Theruleslawyer

A camber shim kit can help if you're losing you camber setting. There are a couple big bushings in the back you could replace. Still it sounds like a tire issue. Does sloppy mean just breaking traction or something else.

In terms of body roll how the body leans from side to side

[Theruleslawyer]

Originally Posted by mikey914

In terms of body roll how the body leans from side to side

any idea what your spring rates are? That or sway bars. There is an active thread over on the track forum about them. Bad thing is you need to drop the rear subframe to install the rear bar. Might think about diff bushings,etc while you are in there.

[TR930]

Adjustable rear toe links, Rouge transmission mounts and monoball LCA bushings did a pretty significant change in feel.

[uncle ben]

Rear toe arms with eccentric lockout helped the rear of my car feel more planted and less squirmy when on throttle out of corners.

[Nyc911]

Originally Posted by TR930

Adjustable rear toe links, Rouge transmission mounts and monoball LCA bushings did a pretty significant change in feel.

This made the biggest difference toe links and monoballs in the rear. Car now feels really planted

[mikey914]

I will def look into the suggestions, thanks!

[mikey914]

Originally Posted by uncle ben

Rear toe arms with eccentric lockout helped the rear of my car feel more planted and less squirmy when on throttle out of corners.

Any particular brand for the toe links and monoball?

[Nyc911]

Originally Posted by mikey914

Any particular brand for the toe links and monoball?

I went w Bimmerworld monoballs and SPL links for both front and rear

[Theruleslawyer]

Originally Posted by mikey914

Any particular brand for the toe links and monoball?

The mono balls seems more or less the same. For toe arms the one with pinch nuts to fix the setting instead of jam nuts are better but also way more expensive. Make sure to get the lockout kit.

[mikey914]

Originally Posted by Nyc911

I went w Bimmerworld monoballs and SPL links for both front and rear

Who did the install? Keith? I’m in nyc

[M 4 FUN]

It could be a million different things that upsets your handling but without knowing more you have to start with the basics. There is no reason to start changing bushings, suspension arms or anything until you have checked your alignment and also checked that your springs are set up right with a corner weighting so the car isn't "three legged" as we say here in Sweden. When you know this is correct you can look into other areas. I suppose you have tires in good contdition? I would start with this and seen how that affects the car.
Personally i don't like the EDC dampers as you are locked in just three settings and can't adjust it in more and smaller increments, and not front to back individually either.

[mikey914]

Originally Posted by M 4 FUN

It could be a million different things that upsets your handling but without knowing more you have to start with the basics. There is no reason to start changing bushings, suspension arms or anything until you have checked your alignment and also checked that your springs are set up right with a corner weighting so the car isn't "three legged" as we say here in Sweden. When you know this is correct you can look into other areas. I suppose you have tires in good contdition? I would start with this and seen how that affects the car.
Personally i don't like the EDC dampers as you are locked in just three settings and can't adjust it in more and smaller increments, and not front to back individually either.

Tires are good. 90 percent tread on Michelin PS4S in 295-30-20

Suspension preload and all are equal. Everything equal height as well

And I’ve had coilovers in all my cars before. I rarely ever change the suspension dampening which is why I opted for DDC, because I literally constantly change my suspension settings every time I step in my car. I put on comfort then switch to sport plus when I speed through the roads/turns.

[Nyc911]

Originally Posted by mikey914

Who did the install? Keith? I’m in nyc

Yes he’s the best! Only person who works on my m3Cs

[Theruleslawyer]

[QUOTE=mikey914;30065057]Tires are good. 90 percent tread on Michelin PS4S in 295-30-20

Suspension preload and all are equal. Everything equal height as well

And I’ve had coilovers in all my cars before. I rarely ever change the suspension dampening which is why I opted for DDC, because I literally constantly change my suspension settings every time I step in my car. I put on comfort then switch to sport plus when I speed through the roads/turns.

The ddc appears to use a progressive spring. Switching to a similar rate linear spring might make the car lean less before it sets. Depends on how important being cushy in comfort mode is.

[M 4 FUN]

Originally Posted by mikey914

Tires are good. 90 percent tread on Michelin PS4S in 295-30-20

Suspension preload and all are equal. Everything equal height as well

And I’ve had coilovers in all my cars before. I rarely ever change the suspension dampening which is why I opted for DDC, because I literally constantly change my suspension settings every time I step in my car. I put on comfort then switch to sport plus when I speed through the roads/turns.

Ok. Then it sounds like you would prefer a firmer suspension setup.
I don't know what rims you have but if you run 295's on stock width 10" rims it's not a good thing for stability.

[mikey914]

Originally Posted by M 4 FUN

Ok. Then it sounds like you would prefer a firmer suspension setup.
I don't know what rims you have but if you run 295's on stock width 10" rims it's not a good thing for stability.

20x9.5 +22

20x11+44


I think some firmer sway bars and whatever else was suggested in this post should with body roll a bit more. I’m not gonna sell DDC

[RugbyBro]

Sounds like you are unhappy with roll and weight transfer? These are relatively heavy cars so physics will be working against you here if you'd like to maintain "street-ability" (i.e softer springs & dampers). I think that your best bet is to try stiffer sway bars which will help alleviate lateral body roll - though they won't be as effective for sudden weight transfer as that requires stiffer springs + damping to support the weight of the car. Also, sways will not do anything for pitch/dive, so just keep that in mind. If you do go the sway route, the only other thing you need to consider is how your selected sway bar(s) impacts the front to rear roll-bias - a stiffer front relative to the rear will promote understeer while a stiffer rear relative to the front will promote oversteer - an adjustable set can be very helpful in dialing in your desired handling characteristics.

Even on my car, running a full MCS setup with stiffer front & rear sways but relatively soft springs - I have very, very little body roll but still have to manage sudden weight transfer (though it's much reduced from stock). I'm okay with that so that I can daily my setup and avoid much stiffer springs for now, however, everything is a compromise when it comes to suspension. There are also drawbacks to an overly stiff setup but that's more of a philosophical discussion on how to set up a suspension to begin with. In general a softer setup has more grip, more roll, but less response and vice versa for a stiffer setup.

[M 4 FUN]

My friend has the KW DDC suspension too and when i test drived his car it felt like a limo in the soft setting. Much softer than my Öhlins setup, and i even went down in spring rates, so i can understand your feeling with that. i think it would be possible to up in spring rate 15% without problems if you would want to. That would tighten up the chassi a bit.

[M 4 FUN]

My friend has the KW DDC suspension too and when i test drived his car it felt like a limo in the soft setting. Much softer than my Öhlins setup, and i even went down in spring rates, so i can understand your feeling with that. i think it would be possible to up in spring rate 15% without problems if you would want to without any problems. That would tighten up the chassi a bit. The KW ddc springs are basically the same stiffness as stock comp springs.