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25mm rear sway bar and wider tires question

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Old Oct 19, 2010, 09:06 PM
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25mm rear sway bar and wider tires question

Hey Guys,

I have a question about my Evo IX GSR SE.


I'm going to be throwing on an adjustable 25mm rear sway bar this weekend, and changing my tires from 245/45/17 Falken 615 to the new 255/40/17 Falken 615k for my stock BBS wheels. I wanted wider tires so I can get more lateral grip, since I'm putting more power down compared to being completely stock when I last went to the track.

I hear with the wider tires, the initial turn in will be reduced a little, but I'm curious if the thicker rear sway bar will help at all with mitigating reduced initial turn in?

I know in mid corner the thicker rear sway bar s supposed to help with rotation, but I'm curious if it will help induce more initial turn in?

I plan on setting it on medium, to get a feel for it.

Further, what else can I expect on the track with the thicker rear sway bar, wider/better tires, and more power?

How much time can I expect to shave off my lap times from the sway bar, better tires, and increased power over stock - 324whp / 353 tq? This is assuming all other things equal of course. For the most part, the weather is pretty good and consistent where I live.

I hear the 615k is about 1 second faster than the older 615. So that is a second just by changing the tires.

And to reiterate, will the thicker rear sway bar have positive effects with initial turn in?

Thanks in advance.

Last edited by Johns_EVO_IX_SE; Oct 19, 2010 at 09:12 PM.
Old Oct 20, 2010, 08:52 AM
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You're posting this in the Evo X Tire forum?
Old Oct 21, 2010, 09:44 PM
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Wow....thanks for pointing that out for me! Sorry about that!
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