F14 fitment
 

I'm planning on ordering Forgestar f14's as soon as I get my 370z but I wanted some help on the offsets on these different set ups if they would work and which one would you recommend? I want to be able to have a flush fit with no spacers if possible and still be able to use the sport package tires.
These are my set up choices
19x9F, 19x10R
19x10F, 19x11R
19x10F, 19x10R <---- the one I'm leaning more towards

Its a RWD sports car, go staggered. I would chose this one: 19x9F, 19x11R. But if you do go for the 19x10F, 19x10R at least you can do tire rotations.

I wanted to go with a square set up because I would much rather have over steer than under steer and tire rotation is a benefit too.

So, what do people have/suggest? I am going with 19x9, 19x11 with swift suspension. What is a good aggressive offset that doesn't go outside the fender or rub? I here 24 for both, but want other examples.

This is the setup I have. Fitment is nice and flush. Also depends on tire choice and drop and camber specs. I think +23 is the lowest they offer. I would get that.

^^ so you went with 24s for both?

Definitely go staggered. There are other ways to reduce understeer, such as more negative camber up front (-1.5 to -2.0) and/or upgrade your sway bars.

Are you lowered or stock height?

stock height: 19x9 +27, 19x11 +23
lowered: 19x9 +20, 19x11 +17

You could go a little (or a lot) more aggressive if you want to play with negative camber front and rear. ;)

Yes. Send me a PM and ill link you to some pics.

if you want to go square, the 10" all around will work fine. I am square on 18x9.5 for the track and have a set of 4 18x10 F14s on order.

Plan to put Swift springs on - but hope to maintain OEM camber settings

You'll need a front camber kit then, cuz front camber cannot be adjusted with the stock upper control arm.

That is pretty much what I was told as well from a few people and vendors since I am dropped on Swifts with some more aggressive camber, except I plan on getting 18s for the weight savings and additional tire choices.

Interesting, I don't think I understand it then. Many of those with swifts are getting oem specs or very close (0.1 off, which could be measurement error).

http://www.the370z.com/brakes-suspen...viewed-13.html

Look on page 13 for specifics.

When you lower with springs/coilovers and/or add wheel spacers you will get "more" negative camber. If you wanted to adjust front camber during an alignment, it cannot be done without a front camber kit because the stock upper control arm does not allow for any camber adjustment at all.

You can stay within the OEM range of camber front and rear, but you will be on the more aggressive end of that range without camber arms front and rear. More aggressive camber can help the car turn in more crisply and it can give the car a more precise feeling.

I too am planning on ordering F14's soon hopefully, thanks OP for starting this thread. One thing, does anyone know a vendor on the forumns that sells these? thanks guys.

+1. I'm at -1.4 up front with a 0.9" drop. I would love OEM camber settings. Just waiting for the spl uppers to be released someday. That gives me time to save for them too.

I wish forgestar made +17 in 19x11". +23 is the lowest. Lower offsets also add more weight to the back of the hub on one piece wheels. One piece Wheel manufacturers typically advertise the weights of their highest offsetsbecause they weigh less.

In addition to what djoathfinder said....

In spec is misleading if someone wants OEM like alignment. Technically -1.4 front is in spec but that's a lot of camber compared to -0.6 stock up front. Handling is better and tire wear is worse.

Front camber kits push in/out the top of the wheel while rear kits push in/out the bottom of the rear wheels.

I would say knowing in advance if you are going to be running a camber kit would be useful for wheel offset decisions.

19x9 +24 -1.4 camber 0.9" drop 255/40
19x11 +24 -1.8 camber 0.8" drop 305/30

http://i118.photobucket.com/albums/o...9-26163211.jpg

^^ I'm ok with these. I prefer an oem setting that is aggressive. I have induced more negative camber before in my vehicles for autox/track use, but it does wear the tires down faster (at least on the inside). Luckily I only put 6k a year on this vehicle :)

The numbers I quoted are just mathematical. The only way to get exact offsets is to go with a custom built wheel. Otherwise, if +23 is the closest, go with that. It's only a 6 mm (1/4") difference.

A bit of "toe in" can help with "scrubbing" the outer edges of the tire, and thus help even out the wear. Even at -1.4 (the inner limits of the camber range), you will be fine. It's if you run something very aggressive like beyond -2.0 where you need to watch how your tires wear.

Regarding your statement about knowing camber in advance and offset decisions...yes and no. Camber adjustments should be made to bring camber back to alignment specs (stock height or lowered), or if you want to augment the car's handling characteristics. Some people buy wheels with really aggressive offset and then add a ton of negative camber to get the wheel to tuck in properly. But really, one should buy wheels with proper offsets and keep the cosmetic camber adjustments to a minimum. If I may make an analogy (for fear of opening a new can of worms), you can buy a body kit and rear wing for looks, or for function.

Having said that, my camber settings are: -2.2 front and -2.0 rear. I wanted an aggressive street setup with more front camber to improve turn in response. These settings feel good both on the street and track so far.

My car is lowered by 0.75" front and 0.5" rear and is corner balanced. I also have 15mm front and 20mm spacers. After lowering my front camber was really out of whack (-1.0 and -1.6). Rear camber was around -3.0. I ended up buying SPC front and rear camber kits because the front camber wasn't adjustable with OEM parts, and they could only bring the rear camber back to -2.4 with the OEM components. When I was doing my research on the forum before lowering people were saying you don't need camber kits (especially front) if you go with less than a 1" drop, but that wasn't the case with mine anyway. However, some people don't mind being out of spec for different reasons, including cosmetic.

Nismofo...nice setup on your car, BTW!

I really have to agree. And I am personally guilty lately of spending too much time focused on the looks over the handling. I drive my car a lot so tire wear is important. For example I have a rear camber /toe kit and my current setup is -1.4 F / -1.2 R camber.....unlike the pic I posted showing -1.8 R.

If I had a front camber kit, I'd probably flip my settings to -0.6 F / -1.6 R like stock.

My apologies to the OP if we got too off topic. Ultimately this can all help.....I hope.

what offset did you order on the 18x10. also do you think there would be rubbing if i got those in 19s and used stock tires?

+34. I will have to run spacers in the rear, but I like a square setup for rotating them. I'm not sure how they would work for 19s, I just copied travisjb's setup.

I would love to see pics of 18" F14s on someone's car.

+34 is right for the fronts to be tucked in slightly or just flush. Are you going to use a 15 mm spacer in the back?

yes

Does 19x9F +20 and 19x10R +20 sound about right to you guys? I couldn't find anyone that had already done 19X10 with forgestar f14s so i decided to stay on the safe side. I'm running with a low offset because i dont want to be using spacers but still have a flush fit.

that will be super agressive in the front. the wheels will stick out 27mm farther than stock. Look at the silver one up above that is +24. he is dropped, so has more camber, which brings the top of the tire in a little. Yours would stick out 4mm farther than his. If you aren't lowered, your are better off with a +27 up front to be safe. That would be the same as running a 20mm spacer on stock wheels.

For the rears, you will stick out 10mm farther, but your really want to stick out about 20mm farther, so you should get a +10 offset on a 10" rim.

I was Planing on dropping the car as low as it can go with out scraping once I get these rims and sell my stock once. So if I'll be lowering the car and most likely running a camber kit should I still go with +24 front and +10 rear?

The front offset is aggressive enough. The rear could possibly be a little more aggressive to match the front...say +3 to +5, if on a 19x10. That's equivalent to a 25mm spacer on stock wheels.

i really did not want to run spacers because of the bad stuff I read about them but so far thats looking like my only option.

I know some people had quality issues with these in the past.

Are they much better now or...?

I don't know guys, I don't think a 19x9 with 24 is the right offset for the front if you are lowered and drive aggressive. I think this gets some rubbing of the inner fender well. People have said that with 20mm spacers on stockies that they get some rub. I don't want any rub, especially on aggresive high g turns. I think for the front with 19.9 24 is too much, maybe go in 5mm.

It seems that 15mm was the best for the front with spacers and oem wheels. Those that put 20mm on had rub issues. so if you apply that 15mm to 9 inch wheel, that should mean the fronts should be 32 offset. Nismofo, you say you get some rubbing (of inner plastic), at some conditions - i don't want it at all, so in my mind 24 is too aggressive if you don't want any fender/plastic contact. So the question i have is how far can go in from 32 and still not get any contact, during all driving condition (full compression, turning, on swift suspension).

Well, the offset numbers are on the table. If you're still afraid of rub then go somewhere between +24 and +32 and call it a day...say +28. If you plan on running a front tire wider than 255 (eg 265 or 275) you may need to run a 9.5 width wheel, in which case add 6 mm to the 19x9 offset to keep backspacing the same. Running something as thick as 275 in front you can run up to 10 mm more aggressive than stock (19x9+37) without rubbing, according to some members.

As long as we're on the subject...
touring (no sport) looking at f14. I went to quite a few threads and came up with this. I am NOT looking for a drop, or any suspension upgrades as i already scrape enough.

Forgestar F14:
--------------
19x9 +24 for the front
19x11 +24 for the back

Hankook Ventus V12 evo K110:
--------------
255/35ZR19 for the front
305/30ZR19 for the back

Muteki SR35 Lug Nuts (black/closed)
Move TPMS over to the Forgestars.


I'm not looking for super aggressive or anything, just a 'standard' kind of install. Anyone see any issues with these specs?

The front might be a tad aggressive at 19x9 +24. Look at my signature picture. That is stock height with front an equivalent of 19x9 +32 (using a 15mm spacer). Yes, I'm making a right hand turn, so the suspension on the driver's side is a little compressed, but you can still get an idea of how the front tire sits in relation to the wheel well. For stock height, I probably wouldn't go more aggressive than +27 offset if you have a choice. I would tend to go closer to +32 myself (for stock height and stock camber).

rarwz,

If you truly believe you won't lower the car (at all) then that is something you really need to decide before you pick offsets and tires. Like djpatherfinder said, stock camber is a huge factor vs. a lowered car. Once you drop the car, the camber sucks the wheels in and you might wish you had gotten a more aggressive offset or different tire.

I have the exact widths/offsets you mentioned above on my Forgestars. With stock height, your car might look a little funny with those tire sizes because they're both smaller than stock. Just a thought. 245/40 and 295/35 might be an optimal choice for a stock height car.

Send me a PM, and I'll provide you some pictures.