2015 Suspension Differences (BRZ and FR-S)
 

Is it true that the 2015 BRZ and 2015 FR-S now have the same suspension? I've found threads on how they've changed. I have not been able to find particular details on the specifications.

I don't think anyone has 100% confirmed, but the consensus is that both cars got new shocks but the spring rates are unchanged.

What shocks did they switch to? I think the old ones were made by Showa.

The rumors were that they were switched with Sachs dampers. Although i havent heard anything to either prove or deny that.

Are you able to confirm that the spring rates have remained unchanged?

Not to be an ass, but did you read the post you quoted? That has your answer already.

You could try calling Subaru to see what part numbers are on 2014 and 2015 springs. If they changed them, there will be a new part number.

if you already have a frs just buy coil overs

Based on his profile, he has a 2015 BRZ (it shows up right under his avatar).

Also, jumping straight to coilovers without reasoning is terrible advice. Coilovers aren't automatically better, and if you don't know what you're doing with adjustments you can make the car handle much worse than stock (even with high quality coilovers).

This. Most cheap coilovers are just that, and ride like garbage. But if you just want to dump your car and become part of the stance crowd they're fine...


My car rides quite nice for being so light, doubt I'd mess with it unless I went to $2K+ coilovers or the tS setup.

I read your post. I cannot assume what you said is correct without proof.

I would like to swap my factory springs with TRD lowering springs. I have one concern. The TRD lowering springs are described to work on the factory struts of the FR-S. I'm worried that there could be a compatability issue in regards to performance if installed on my BRZ. What do you think?

TRD Lowering Springs
http://www.trdusa.com/parts-detail.h...categories=all

I think you are worrying to much. There isn't really much difference. Trd springs are really nothing special.

C'mon Takumi! a Tach doesn't give you hp!!

Almost every single part can be used interchangeably with these two cars, they are that alike.

Go read it again...

I'm never going to confirm it because I've already said that I don't think anyone has 100% confirmed it.

If you want a definite answer, call your local dealership and ask about part numbers between 2013/2014 and 2015.

So I looked up the part numbers and Subaru lists the same shock number for 2013-2015 (20310 Front & 20365 rear); however, I just replaced my 2014 Limited with a 2015 S.B, and they drive totally different. The 2015 feels much better dampened. It's not nearly as bouncy. In fact it's so much better that my Bilsteins and Swift Spec R's are just sitting in a box for the time being. I'm not even going to bother installing them until I know I'm headed to the track.

edit: it could also be that my S.B only has 8k on it and my Ltd was approaching 24k when I swapped to Bilsteins.

DEAR GOD SIR, may i trouble you for some shock dynos? Im sure RCE would be more than willing to troubleshoot that for you :)

There's nothing to troubleshoot. I'm just noting that my 2015 rides better than my 2014. I commute 130 miles a day, so a decent ride is important. I'm not saying the Bilsteins are bad, but they're not as comfortable as stock on long trips.

Its hard to imagine the variance in the new shocks for rebound and compression, it could be one of those OEM+ upgrades people look for knowing the dyno graph.

I always felt that my 2015 BRZ rode extremely well. It was my first BRZ so I couldn't compare it to any others, but I felt that the suspension was extremely firm and not bouncy at all. I was surprised at how firm it was from the factory, it was almost as good as my old MR2 with GC coils and Koni's. The handling was similar to my brother's STI on Feals. though, I haven't really pushed the car to its limits and will check that out next month at the track.

From my understanding, it was just the FRS front struts that were changed to be the BRZ spec struts. Toyota wanted to remove some of the tail-happiness that the 2012-14 models had.

As far as adding TRD springs to a '15, I would indeed be a bit wary. The TRD springs were designed to work with the older front struts (read: less dampening). This is why Swift had FRS Spec and BRZ Spec springs for the '12-14 models. The '15 front struts will work well with anything that was BRZ specific or was applicable to both cars (RCE, RSR, etc).

You, sir, are incorrect. The FRS & BRZ have the same dampers, they had different front spring rates. Way to infer what the manufacturer does based on casual observation of the aftermarket. Correlation does not imply causation.

^^ Slight correction, both spring rates were different between FRS and BRZ's.

FRS F/R: 2.3k/3.8k

BRZ F/R: 2.7k/3.5k

I found with the stock springs the car was over damped, especially up front. It really feels like they went a bit heavy on the damping even with the stiffer of available rates, and since they shared damping rates it needs to work with both the spring rates.

It's not a correction, it's an addition to my statement. I never made the claim that the rears weren't different. I was just letting him know the error in his ways because I'm constantly shocked at the amount of misinformation posted on this site, despite the correct information being posted 2 clicks away.

The TRD springs are not shown to be compatible with the 2015 FR-S on Toyota's official parts site. I find that odd due to the fact that the 2015 RS 1.0s have TRD springs installed.

I may be wrong, but I thought the 2015 RS 1.0's had the TRD springs installed already.

They do.

Whoops. Totally read this as FRS. -___-

Thank you for this common sense comment.
I have a set of both MY13 and MY 15 struts sitting in my workshop at the moment, and they are different (damping).


I have springs from both an MY 13 and an MY 15 sitting in my workshop at the moment and they are identical.


BRZ/FR-S/GT86 all have different springs on the same dampers - this has been proven over and over again. I'm currently running STI springs on my Toyota GT86 on Bilstein B6 (Previously on the stock shocks)


I wish people would read some of the stickies before commenting.

Well I just ran into something very interesting:
source: http://www.scion.com/scionracing/896...the-scion-frs/

I wound up installing an Eibach Pro-Kit with a friend on my 2015 BRZ.

So I'm looking to get aftermarket springs for my 2015 FR-S and it seems like most of them were designed for the 13-14 model years.

The ones I want are the Tanabe GF210 since they have a very minimal drop of .6" front and .9" rear (My splitter already scrapes a lot and I can't really go much lower since I'll be driving it in the winter) and slightly higher spring rates (stiffer but still DDable).

My first question is will these work well with the updated 2015 stock struts? And will they actually be any stiffer than stock? There doesn't seem to be a consensus as to whether or not the 2015 FR-S stock springs are stiffer than 13-14. Any advice is appreciated.