Exit oversteer reco for KW Clubsports

[kawstik]

Hey all,

Coming up on my 7th track day this year, and as the weather has warmed up, I've started to be plagued with mid corner exit oversteer despite running the stickiest tires I've ever owned...

Clubsport track settings:

FD - 3 from full
FR - 5 from full

RD - 4 from full
RR - 7 from full

Tires:

Front: 265/30/19 Toyo Proxes R888
Rear: 295/30/19 Toyo Proxes R888

Always run Euro MDM on the track.

This setup has been beyond amazing until the weather warmed up significantly last week. Zero under/over steer all spring and early summer. My rubber is nearly new, and was properly heat cycled. My only conclusion is that it has to be my coilover settings and / or tire pressures (which I monitor closely).

Ideas?

Thanks in advance!

[shirtpants_]

Originally Posted by kawstik

Hey all,

Coming up on my 7th track day this year, and as the weather has warmed up, I've started to be plagued with mid corner exit oversteer despite running the stickiest tires I've ever owned...

Clubsport track settings:

FD - 3 from full
FR - 5 from full

RD - 4 from full
RR - 7 from full

Tires:

Front: 265/30/19 Toyo Proxes R888
Rear: 295/30/19 Toyo Proxes R888

Always run Euro MDM on the track.

This setup has been beyond amazing until the weather warmed up significantly last week. Zero under/over steer all spring and early summer. My rubber is nearly new, and was properly heat cycled. My only conclusion is that it has to be my coilover settings and / or tire pressures (which I monitor closely).

Ideas?

Thanks in advance!

What are your spring rates? divorced rear or true coilover?
What does the F/R ride height look like?
You could try lowering the rear bump damping

[Richbot]

why the F do you have the damping settings different from left to right?

If it's loose on-throttle, add rear rebound, subtract front rebound

[The HACK]

Originally Posted by Richbot

why the F do you have the damping settings different from left to right?

If it's loose on-throttle, add rear rebound, subtract front rebound

I'm trying to decipher OP's settings, I think "D" is for compression or bounce, and "R" is for rebound? Are ClubSport rebound and compression adjustable?

[Malek@MRF]

Originally Posted by The HACK

I'm trying to decipher OP's settings, I think "D" is for compression or bounce, and "R" is for rebound? Are ClubSport rebound and compression adjustable?

Yes, they are 2 way adjustable. I am hoping that his settings mean rebound and compression, and not different settings for left/right.

[Richbot]

Ok that would make a bit more sense

D? Dumper? Damper? Dang that was a hard whack damping? I don't know what D stands for here. B for bump, C for Compression, R for rebound, D for dunno?

If the CS is any good, one click ought to make a decent difference. If it were me I'd add some rear rebound and see what happens, leave the rest alone, repeat until better unless it's getting worse

[cenix]

Spring rates, tire pressures, alignment settings? Is the car corner balanced? There's no pertinent info here.

I would start by reducing both the rear bump/rebound a little and go from there. Leave the fronts alone for now if that is working for you. Generally I like my rebound setting a little higher than my bump, but that differs from car to car & track to track.

[kawstik]

Ha, sorry. D = bump. R = rebound.

To answer a few questions:

- No the car is not corner balanced, aligned each time I replace rubber.
- KW Clubsports are a true 2 way adjustable coilover
- Ride height is pretty perfect imo. Coilover was installed by my local German tuner shop.

[M3 Number 86]

hmm - these are the settings I run (from full still)

Front: Bump 6 Rebound 6
Rear: Bump 6 Rebound 8

I'm going to stiffen all around in general next time to see the effects then adjust front rear from there.

Spring rates are 110/140nmm

[surlynkid]

Originally Posted by Richbot

why the F do you have the damping settings different from left to right?

If it's loose on-throttle, add rear rebound, subtract front rebound

I resisted the temptation to ask about the left/right bias, but you captured my sentiment.

[surlynkid]

Originally Posted by The HACK

I'm trying to decipher OP's settings, I think "D" is for compression or bounce, and "R" is for rebound? Are ClubSport rebound and compression adjustable?

Ok. That makes more sense. The way it was presented was confusing.

[bigjae1976]

Why mess with damper settings when you're still driving with MDM on? Recommend learning how to control the car without relying on MDM.

Then maybe start playing with some damper settings.

[elim11]

Originally Posted by bigjae1976

Why mess with damper settings when you're still driving with MDM on? Recommend learning how to control the car without relying on MDM.

Then maybe start playing with some damper settings.

Wow so direct lol.

[bigjae1976]

Originally Posted by elim11

Wow so direct lol.

I am direct but I'd like to see the OP succeed. Maybe it will hurt some feelings but mid corner oversteer with someone who has 7 track days under their belt is probably a driver issue.

[jakob66]

Originally Posted by kawstik

Hey all,

Coming up on my 7th track day this year, and as the weather has warmed up, I've started to be plagued with mid corner exit oversteer despite running the stickiest tires I've ever owned...

Clubsport track settings:

FD - 3 from full
FR - 5 from full

RD - 4 from full
RR - 7 from full

Tires:

Front: 265/30/19 Toyo Proxes R888
Rear: 295/30/19 Toyo Proxes R888

Always run Euro MDM on the track.

This setup has been beyond amazing until the weather warmed up significantly last week. Zero under/over steer all spring and early summer. My rubber is nearly new, and was properly heat cycled. My only conclusion is that it has to be my coilover settings and / or tire pressures (which I monitor closely).

Ideas?

Thanks in advance!

The question is actually if you drive the same? Do you enter the corner with the same speed? Did you record track times with sectors to compare?
What I'm trying to say is that every speed level and driving style requires a different setting. Your driving style changes the more you track your car.

Search the forum for the 'oversteer and understeer' flow chart (it explains what to adjust based on symptoms), that's a good start to develop a feeling on what to do.
Good luck

[Richbot]

Originally Posted by bigjae1976

I am direct but I'd like to see the OP succeed. Maybe it will hurt some feelings but mid corner oversteer with someone who has 7 track days under their belt is probably a driver issue.

Yep. Normally I'm the guy thanks for taking one for the team

Secondary consideration I will say it again : beware the R888 with a bunch of cycles. They fall off a cliff at a certain point in their life and suck from then on, especially f you do not shave them first. Tread depth doesn't matter. They could be cycled out. A change in balance to oversteer tends to indicate less grip all else being equal

[Redd]

Corner exit oversteer is almost a sure sign that your rear toe is set wrongly. What rear toe are you running?

[tlrid3r]

subscribed

[PrimeBMW]

Keep in mind the op said 7 track days this year not 7 days total. In addition it looks like he is in Germany..........if driving the Nurburgring he could be excused for driving with euro MDM. With that said the car would need to be driven to the limit with traction control completely off to get the best picture.

[admranger]

Originally Posted by Richbot

Yep. Normally I'm the guy thanks for taking one for the team

Secondary consideration I will say it again : beware the R888 with a bunch of cycles. They fall off a cliff at a certain point in their life and suck from then on, especially f you do not shave them first. Tread depth doesn't matter. They could be cycled out. A change in balance to oversteer tends to indicate less grip all else being equal

Ok, I'll be that guy for 888's: They suck right out of the mold and don't get better with age. Horrible. Tires.

[Richbot]

They're not all bad if you shave them first. But yeah. They have one thing going for them - lots of big sizes, not too pricey. But I would honestly rather have an undersized RE71R than a right-sized R888. 200tw tires have advanced a lot since the R888 came out 10 years ago

[surlynkid]

Originally Posted by elim11

Wow so direct lol.

Agree with Jae - if the driver cannot feel the car and drive the car with DSC off, there is likely little the driver will feel with a click here or there on dampers. Exit oversteer for noob - open up the steering wheel, track out and get on the gas later.