Staggered question?

[Readytoxplod]

yeah

[wparsons]

Wider in the rear will increase understeer. If you don't want to upset that balance, get square wheel/tire sizes.

Out of the two options, the 8.5F will have less understeer than the 8F, but both will definitely add understeer.

IMO, you're better off with 9" all around.

[gramicci101]

Originally Posted by wparsons

Wider in the rear will increase understeer. If you don't want to upset that balance, get square wheel/tire sizes.

Question: if you have square sizes, but the rear has a lower offset resulting in a wider stance, will that affect understeer?

[murdoc]

What tire size were you going to run on each wheel? In the past I have picked my tire width and then chosen wheel from there. Plus wheel selection for 5x100 has gotten much better the past two years, so you should be able to find whatever size you need.

Go with a square setup either way unless you are making big power.

[murdoc]

Originally Posted by gramicci101

Question: if you have square sizes, but the rear has a lower offset resulting in a wider stance, will that affect understeer?

I don't think you'll have much of an effect, maybe a little less understeer, but you aren't gonna do much under stock fenders.

[mav1178]

Originally Posted by Readytoxplod

I'm looking at some Enkei Raijin wheels, and I was wondering which size would have less understeer/maintain original balance? I drive my car in the mountains daily and plan to track it once a year. My car has a bit more power with bolt-on's and a tune.

If you have to ask the above question, with this "exclusion":

Originally Posted by Readytoxplod

I understand wide tires in the back will hinder the lightness of the car and balance, but I plan to get rear swaybars, stiffer suspension, camber and tune out the understeer as much as I can along with increasing power. Please don't advise me to get 8 inch tires all around, I know it will handle better but I'm set on 9.5 rear.

... then you should stick to square.

Tell me, how do you dial out the understeer? What settings will you run? Or will you rely on the expertise of the various armchair engineers on FT86Club (myself included)?

I ask this because you already answered your own question, yet you don't even know how the staggered setup will affect the car without all the extra mods. How can you know the answer to the chicken without knowing the answer to the egg?

Keep it simple.

-alex

[BRZ21]

Originally Posted by gramicci101

Question: if you have square sizes, but the rear has a lower offset resulting in a wider stance, will that affect understeer?

Generally the wider end will grip more. Widening the back would make the car push more.

With how small the offsets are on car wheels I doubt you notice it... Especially in day to day driving

[murdoc]

Originally Posted by BRZ21

Generally the wider end will grip more. Widening the back would make the car push more.

With how small the offsets are on car wheels I doubt you notice it... Especially in day to day driving

This is what i meant. Less oversteer not understeer.

[wparsons]

Originally Posted by BRZ21

Generally the wider end will grip more. Widening the back would make the car push more.

With how small the offsets are on car wheels I doubt you notice it... Especially in day to day driving

Track width really doesn't increase grip at all since you're just spacing the tires further apart. Just look at the Nissan DeltaWing, if the wider end had more grip that thing would do nothing but drive straight.

It does, very slightly, change the roll center... but since we're talking about ~10-20mm per side it's not enough to really notice it in the handling balance.

IMO, you're better off with spacers in the rear than a different offset on the wheels because at least that way you can still rotate your tires. Running staggered offsets means the wheel is stuck where it is.

[Readytoxplod]

Originally Posted by wparsons

Wider in the rear will increase understeer. If you don't want to upset that balance, get square wheel/tire sizes.

Out of the two options, the 8.5F will have less understeer than the 8F, but both will definitely add understeer.

IMO, you're better off with 9" all around.

Thanks for your input!

Originally Posted by murdoc

What tire size were you going to run on each wheel? In the past I have picked my tire width and then chosen wheel from there. Plus wheel selection for 5x100 has gotten much better the past two years, so you should be able to find whatever size you need.

225/40R18 in front if I do 8.5, 235/40 18 is also an option from what I have gathered thaqt may be stretched a little.
If I do 8.0 I can do Nexen n3000 235/40 r18. Also 255/35R18 in rear. Someone's ran 245/35 in Michelin PSS in the rear with the same wheels also

[gramicci101]

If you're set on 9.5 in the rear, get 8.5 in the front. You could do 225/255 or 235/265.

[ZDan]

Originally Posted by Readytoxplod

I said I don't want to run square firstly, repeating what I already know(square is best) is sidetracking my question: "Out of the options provided which would handle best?" Not sure if you are being smart with me, I am not going to solely rely on "armchair engineers" for my car.

You know square is best, but can't determine that 8.5/9.5 is better than 8/9.5...

[mav1178]

Originally Posted by ZDan

You know square is best, but can't determine that 8.5/9.5 is better than 8/9.5...

This is what I am getting at.

OP, we can all call you out: You can tune anything out of whatever wheel setup you are going to run, but... why? Why are you putting more in and taking some out to get to an optimal setup, when you can put less in and get to that SAME optimal setup without spending more money?

The goal is isn't what you can do with all these parts and bits. It's to tell you that you are building it in a way that is counter-productive to your end goal of improved handling.

You can make the right decision in this case by not making the expensive purchase. The sway bars and rear camber adjustment is totally not needed unless you are 1) too low for stock camber adjustment, or 2) your driving style dictates more roll stiffness in the rear.

-alex