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      10-31-2008, 05:12 PM   #1
M3to335
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Do I need spacers running 17" Kosei K1s?

Two questions.

1) Will I need spacers with this setup and
2) Is anyone running 255 square?
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      10-31-2008, 05:34 PM   #2
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Originally Posted by M3to335 View Post
Two questions.

1) Will I need spacers with this setup and
2) Is anyone running 255 square?

1. No
2. Yes, Satakal is running the exact setup with Falken Azenis RT615's on K1's.
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      10-31-2008, 06:27 PM   #3
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1. No
2. Yes, Satakal is running the exact setup with Falken Azenis RT615's on K1's.
:-) guilty
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      10-31-2008, 06:34 PM   #4
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:-) guilty
any close up pics? just wanna see how 255s look on 17x8.5

thanks!
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      10-31-2008, 06:35 PM   #5
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just a few posts down....

http://www.e90post.com/forums/showthread.php?t=182035

Edit: I'm so excited that someone wants to see pics! Woohoo!

http://www.e90post.com/forums/showthread.php?t=178218

http://www.e90post.com/forums/showpo...0&postcount=51

http://www.e90post.com/forums/showthread.php?t=181486
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      11-01-2008, 07:19 AM   #6
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Nice. Thanks for linking me.

I saw your comment about the rear offset looking "rediculous" but it "works". Yup, it looks silly alright haha. I've got 15mm spacers I could throw on the rear but that would sort of throw off the whole square setup reasoning.

Its good to see that there are no issues with it getting near the front strut.
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      11-01-2008, 01:15 PM   #7
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It gets very close to the front strut. I've been running this setup on track for the past 3+ sets of tires.

All 255s.

If you slammed your car, it will not fit. Mine is on TcK and it's at the highest ride height setting (for performance reasons) and it fits perfectly. If I lowered it more, it wouldn't fit.
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      11-02-2008, 11:18 AM   #8
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Hmm, thats not terribly reassuring.

Do you consider H&R springs "slammed"? I guess a good way to compare is for you to tell me how much gap (if any) is left in the front wheel well on your street tires. Any chance you could measure that the next time you head out to the car?

Thanks
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      11-02-2008, 11:43 AM   #9
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Quote:
Originally Posted by M3to335 View Post
Nice. Thanks for linking me.

I saw your comment about the rear offset looking "rediculous" but it "works". Yup, it looks silly alright haha. I've got 15mm spacers I could throw on the rear but that would sort of throw off the whole square setup reasoning.

Its good to see that there are no issues with it getting near the front strut.
Why would it throw off the reasoning? For rotation? Changes nothing. For grip? Same amount of rubber, you're just putting your track width back in, which you lost, and need/want.
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      11-02-2008, 01:17 PM   #10
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Why would it throw off the reasoning? For rotation? Changes nothing. For grip? Same amount of rubber, you're just putting your track width back in, which you lost, and need/want.
Because based upon my 40+ track events on the Kosei K1 (and experience of others), the square setup on the Kosei, with it's current offset on all four corners, makes for a car that still slightly understeers.

If you put the 15mm spacers on the rear and widen the rear track, you will get MORE understeer, exactly what you weren't trying to achieve with a square setup.
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      11-03-2008, 08:33 PM   #11
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Quote:
Originally Posted by leftcoastman View Post
Because based upon my 40+ track events on the Kosei K1 (and experience of others), the square setup on the Kosei, with it's current offset on all four corners, makes for a car that still slightly understeers.

If you put the 15mm spacers on the rear and widen the rear track, you will get MORE understeer, exactly what you weren't trying to achieve with a square setup.
That's what I was thinking would happen.

Im still wondering what you consider slammed. Im a little apprehensive about going 255 up front now

I suppose worst case I could waterjet a 3mm plate to push the wheel out just a tad.
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      11-04-2008, 08:30 AM   #12
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Ive been running 255s all the way around on my Koseis with no problems. Stock sport suspension here.
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      11-04-2008, 12:38 PM   #13
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Cool. Unfortunately your not lowered.
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      11-04-2008, 12:39 PM   #14
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Quote:
Originally Posted by leftcoastman View Post
Because based upon my 40+ track events on the Kosei K1 (and experience of others), the square setup on the Kosei, with it's current offset on all four corners, makes for a car that still slightly understeers.

If you put the 15mm spacers on the rear and widen the rear track, you will get MORE understeer, exactly what you weren't trying to achieve with a square setup.
That's not the definition of a square setup. That's the definition of trying to achieve a neutral handling car. Which isn't always the reasoning for a square setup. Which is why I asked him.
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      11-04-2008, 12:44 PM   #15
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Cool. Unfortunately your not lowered.
Wonder if we can get a little more out of leftcoastman. Ive seen his car in person with R compound 255s and he didnt have rubbing issues with his TC kline Coilovers. He cant have a much different ride height than you.
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      11-04-2008, 12:52 PM   #16
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Originally Posted by O-cha View Post
That's not the definition of a square setup. That's the definition of trying to achieve a neutral handling car. Which isn't always the reasoning for a square setup. Which is why I asked him.
Huh? Your thought process works in circles but misses the conclusion.

At the risk of inducing a tantrum, for which you are famous, I'll explain in pejorative terms.

1) OP said in the first post that he wanted to get better performance.
2) OP then said he did not want to induce understeer.
3) OP indicates that he wants to track/autox the car

Ergo, logic would indicate that he probably wants the square setup to increase performance and reduce understeer.

Increasing grip in the rear by widening rear track does not achieve that - therefore he doesn't "need/want" it.

Cue tantrum, please.
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      11-04-2008, 12:57 PM   #17
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Quote:
Originally Posted by M3to335 View Post
That's what I was thinking would happen.

Im still wondering what you consider slammed. Im a little apprehensive about going 255 up front now

I suppose worst case I could waterjet a 3mm plate to push the wheel out just a tad.
It's not a ride height thing, directly. It's just that when you lower a car, with coilovers, the adjuster ring goes lower too. Being that the strut tube is nearly touching the tire....and the adjuster ring is larger than the strut tube...if you lower the car too much (implying you'll lower the adjuster ring), the adjuster ring will hit the tire. You may not have an adjuster ring on your stock setup, but you sure as hell have a spring perch.

I will say that I run tons of negative camber when I , so I don't have to worry about the tire hitting the fender lip. If you slam city on stock camber, that may not be the case.

Unfortunately the only way to really tell is buy/borrow a single wheel/tire setup and throw it on there. We can play the measurement game till our eyes turn blue, but I can't guarantee it'll work.
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      11-04-2008, 01:02 PM   #18
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Quote:
Originally Posted by leftcoastman View Post
Huh? Your thought process works in circles but misses the conclusion.

At the risk of inducing a tantrum, for which you are famous, I'll explain in pejorative terms.

1) OP said in the first post that he wanted to get better performance.
2) OP then said he did not want to induce understeer.
3) OP indicates that he wants to track/autox the car

Ergo, logic would indicate that he probably wants the square setup to increase performance and reduce understeer.

Increasing grip in the rear by widening rear track does not achieve that - therefore he doesn't "need/want" it.

Cue tantrum, please.
Show me where he said he wanted better performance or to specifically reduce understeer? I'll save you the trouble, he didn't, the first mention is YOUR post.

Ergo your reading ability is not the best.

I know a lot of people who use square setups so they can rotate their tires, SACRIFICING some of their neutralness in the process.


Again which is why I asked him to insure what his goal was.
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      11-04-2008, 01:13 PM   #19
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This is all very much hearsay in the first place as it boils down to driving style and where you're driving. I didn't have understeering issues. Bring the spacers and lug bolts with you even if you decide not to use them, you might find yourself oversteering out of corners (do you have an lsd?)
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      11-04-2008, 01:38 PM   #20
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Oops - was replying to another post on square setup and understeer. Oh well, my mistake.

It's still fun playing the O-Cha video game. Push a button, out comes a tantrum!
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      11-04-2008, 03:17 PM   #21
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It's still fun playing the O-Cha video game. Push a button, out comes a tantrum!
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      11-04-2008, 04:26 PM   #22
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Yeah, I need to have this LeftCoastMan as an instructor. I wonder if he's the "get everything inch perfect then add more speed" or if he's the "that spin was fun. Good thing we didn't hit anything" kinda guy.
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