How wide tires affect overall performance

FortuneLSX-TT

I'm new to sway bar settings myself. So could you explain how stiffening the rear sway bar will help with too much grip in the rear already? I was under the impression that stiffer = kept the tires planted more = more grip.

Secondly, wouldn't he want to work on increasing the front grip instead of reducing the rear grip? Which would negate any benefit the 305's would of given him and simply reduce overall traction?

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GTM TT, OS Giken GT clutch, Greddy Ti-C, Z1 test pipes, Hawk HP+ pads, steel braided brake lines, ZSpeed CSC, 34r oil cooler, CSF radiator, HKS EVC 6 boost controller, Whiteline sways, Swift Springs, Kinetix adj camber package, Osiris UPrev tune

DEpointfive0

You get different data/input from different sources.


The GENERAL rule is:
Increase front bar stiffness, increase understeer.
Increase rear bar stiffness, increase oversteer.
I think the thinking is weight transfer/balance in turns?

The track guys, IIRC, say that you need more front bar for better traction/oversteer though.


All I know is that it's a balancing act and too much/too little of either bar plays different roles depending on what kind of driving you're going to be doing.



My input, for me, 99.9% of my driving is very aggressive street driving, so I got the Nismo S-Tune bars, because I assume they know what they're doing a bit, and they are making a stiffness setting for the masses, which I fall into.

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FortuneLSX-TT

I tried looking online, and you're right I'm getting a lot of conflicting information. The bottom line was "it depends" and its all about balance. Increased stiffness may increase grip, but then again going too far reduces it. The best I understand it now is thus: (if someone understands it better please correct me if I'm wrong)

The front is looser than the rear under that scenario. Which means the front rolls a bit more, and since the rear doesn't roll it has to slide. So it's all about the balance of the two.

I'd still think that softening the front relative to the rear would be the way to increase overall traction. I.e. upgrade both front and rear, but put rear on stiffer and the front on softer. So both bars are stiffer than stock, but the rear increases stiffness more than the front.

Suspension is confusing...

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GTM TT, OS Giken GT clutch, Greddy Ti-C, Z1 test pipes, Hawk HP+ pads, steel braided brake lines, ZSpeed CSC, 34r oil cooler, CSF radiator, HKS EVC 6 boost controller, Whiteline sways, Swift Springs, Kinetix adj camber package, Osiris UPrev tune

DEpointfive0

I's confuzed too...


That's why I took the crappy lazy way out, lol

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Zoren 370

This is the reason I like this forum so many smarty pants! Very informative! Thank you much!
Guys Op said he doesn't track the car so what the fuss...as long you enjoy your Z and like how it looks it doesn't matter! We still love you because your nuts about the Z.

synolimit

Most auto x guys run no rear and a hard front. Doran runs a huge front! I now have a stock rear and whiteline front set to full hardness. It feels fine but still lots of body roll! Dare I say feels like more body roll than stock? But stock alignment blows and left to rights are off 0.5* on both so no report till I finish what I want.

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