Going aggressive with front offsets

Red__Zed

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SE

Hey Dan,

Offsets also are affected by tire sizing. With OEM camber specs the widest tire I'd run on a 9.5 +15 is probably a 245. Anything wider and I'd go with a higher offset wheel.

When dealing with proper offsets, often times it is trial and error. People get wheels and push the envelope around what is the normal offset to either fit more aggressive wheels and/or tires.

With beefy tires up front, the norm is typically a 265 with a 10.5 +22. Perhaps someone else can chime in with their front wheel/tire setup.

Hope I helped a bit!

SE

Oh a very helpful tool is the offset calculator. I can't find the link at the moment but you input your current specs and desired wheel/tire size and it helps your figure out the clearance from there. I'll see if I can track it down.

XLR8SN

With a 9.5 rim and a 245/35 tire...with +15 offsets...you will rub. Maybe not too bad..but on turns and sudden hard dips...you will rub if you don't adjust anything. There are no front camber adjustments stock and I am not too sure about the current front camber adjustment a-arm offerings.

I have 245/35 tires with a +17 offset (+22 with +5mm spacer) and I do rub at times.

The +15 will probably rub a little more at times...but might be passable. 2mm can be a lot in regards to clearance distances. I am dropped on Tanabe GF210 springs...but unless you use coilovers and drop it lower to create the negative camber...its going to be a little rough at times....in my opinion.

Not saying that it cant be done...just that if you use only drop springs and those offsets...then that is the results that I am getting. Still waiting on better options for the front camber adjustable arms.

Jamaica

I have a 0 offset in the front and never rub.

Red__Zed

do you have a your fenders rolled, etc?

Jamaica

Nope nothing rolled and nothing rub. Its perfect to me!

OMGWTFBBQ

I'm thinking about running a 18x10 +15 265/35. Might try a 275/35. They're hanging out in my garage. Just need to find the effort to get off my lazy butt and test fit them.

I'm lowered on KW Variant 3's. SPC front camber arms coming in soon. Fenders rolled, liners trimmed, and bumper tabs relocated.

wishihadnav

if it aint rubbin u aint tryin hard enough..haha.

bullitt5897

OP there is plenty you can go up to in the front. I do have a few questions for you...

Do you have any supporting suspension mods?
Do you have a BBK? or are you planning on one?
Are you opposed to aggressive camber?
Will you track the car?
What is your desired ride height? (Slammed, Slight Tuck, flush, Slight gap, stock)

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Shop Cars: 2013 318whp Nismo VspecII 370z *SOLD*, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054

Red__Zed

None currently.

No BBK. I plan to put on the Akebono's in the future, but it will be a while.

How aggressive to you mean? Some neg camber is fine, but I'm not trying to go crazy.

I will probably be tracking the car in the future (3-5 years), and will build it as such. When it moves from DD status, but right now, it's a street car.

Current ride height is stock, I'm still undecided on how much of a drop I will want. Definitely nothing lower than flush/slight tuck though. Probably about the Eibach drop level or a tad lower.

bullitt5897

Ok thanks for answering my questions... This tells me alot! Honestly, in my opinion you don't want super aggressive yet you don't want to be te avg Z guy either. Here is what you can do:

Normal pad height *this will clear the future akenonos*
9.5 in a +10 to +15 shoul be just fine.
I reccomend coilovers as try will be much easier te adjust and springs often can give you a bouncy ride.
I also reccomend front adj control arms

If you want to go 10's up front then I would do a +20 and a normal pad height.

This will give you a nice aggressive stance with full adjustability. Now if your skeptical of those numbers run a 9.5 @ +15 or 10 @ +23

__________________
Shop Cars: 2013 318whp Nismo VspecII 370z *SOLD*, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054

Red__Zed

Thanks for the follow up. I'm a little confused, since I'm hearing different things from different people, ie XLR8SN saying he's rubbing w/ a 9.5 et 22. I've got an opportunity to pick up some RPF1s that are 9.5/10.5 +15 all around for a good price, but wanna make sure they'll fit before I drop the coin on them.

XLR8SN

To make it as simple as possible to hopefully help you out a little...what I was stating was based on my setup which is a Nismo 370Z dropped on Tanabe GF210 springs running 19X9.5 +22 and a 5mm spacer with the stock 245/35 19 tires (effectively making them +17)...on hard dips and in a turn with a bump...I will rub the inner clips a bit. The clips are slowly getting shaved...so thats how I know.

If you use coilovers...then you can drop the car lower and by virtue of the suspension characteristics with coilovers...it will create negative camber as you lower the car. That extra few degrees might make it possible for you to fit in lower offset rims assuming you choose to drop the car low enough to get the right amount of negative camber to clear. The OEM a-arms do not have adjustments for camber. The negative camber is "created" as you lower the car on coilovers. The a-arms (or suspension travel movement) have a parabolic effect going towards the center of the car as you lower it. Lower car=more negative camber by default.

The 9.5 +15 is +2mm lower in offset from mine currently. I would assume that you might rub here and there depending on the road and surface conditions. Assuming just drop springs. At stock height...it might not even travel that far to rub at all. With coilovers...you can drop it and clear no problem I would assume.

You could also just use a 235 tire to stretch a little to give you that couple mm's to clear until you get coilovers and/or adjustable a-arms as well. You could also get a fender roller and flare out the front fenders with it too after you move the fender clips.

As long as you are willing to make the needed adjustments to run your setup...almost anything can be made to fit in there....well...within reason of drive-ability.

Hope that helps a little bit more.

OMGWTFBBQ

DannyGT is running a 19x9.5 +22 265/35 front and 19x10.5 +22 305/30 rear. He's lowered on BC Racing coilovers.



There's a 7mm difference in his offset and the one you're thinking about, but the 255 tire should make it around the same as far as clearance goes.