Recommendation for lowering spring on 2017 BRZ AT
 

For 2017 BRZ limited (without performance package) what lowering springs do you recommend? My priorities are perfect fit with oem shocks, maintain oem ride comfort, lower about an inch front and rear. Budget is less than $300.

I think the TRD lowering springs would be a good fit for you. Made for the OEM struts and have a 1" drop.

https://parts.toyota.com/p/Toyota__8...TR0718130.html

Do those fit on BRZs?

Yes, they have the same suspension...

Also, look into the RCE Yellows. I know you said your budget is below $300 but these springs are amazing. I honestly felt the ride got better and i have had no issues with DD.

Mind you that all proper lowering springs are also stiffer, to compensate reduced travel, to not hit bumpstops often, if left of old spring rates but simply shortened. Also often lowering springs are chosen for performance reasons .. and thus are also bought(/designed/sold) stiffer, to eg. reduce body roll on grippier tires.
There is also bit that our cars are rather low and with rather short shock travel to begin with.
Summarizing it up, slight sacrifice to comfort/compliance will be made anyway, and it's worth going for springs, that lower to reasonable amount, within inch, not much more than that, as those that lower even more very probably will be even stiffer, there will be very little travel left, so it will be harder for suspension to actually do it's job of handling road defects, and also to fix up overlowered suspension one may need extra parts, like to fix roll center, diff riser and such, rising needed budget by much.
And yes, RCE yellows seems popular & good enough choice for lowering springs, many go with.

Just ordered a set of RCE Yellow, hope it’s good as advertised.

Hope you were smart enough to save for an alignment, and hope you're capable enough to do it yourself, or saved enough to pay someone to put the springs on for you.

Alignment is a must every time I do suspension mod.

Get camber bolts while you're at it.

Are those required for this springs? When u had Apexi N1 coilovers I didn’t get any camber bolts or LCAs, I had some negative camber in rear but not too bad.

Camberbolts are not "required", but good alignment is advised to have and those are relatively cheap way to add camber adjustment to front, especially if it's for shocks without camberplates in set, like stock shocks, with which usually springs are used with. Some camber adjustment can be done within slack of bolts, but range is very limited (sometimes insufficient to get close/even side-to-side) and real pain to change precise.

Afaik no coilovers ship with LCAs, unless it's some kit of coilovers and them (&maybe something else) custom picked up by shop. There is some negative camber in stock twins (~ -1dg IIRC), and even more negative camber is naturally gained from lowering due geometry changes, both front and rear.

Not required. But the super cheap OEM bolts for the front make a very nice difference allowing you to get a little extra camber for even better handling. Not enough to worry about tire wear but noticeable improvement in handling.

- Andrew

So just to clarify in one post.

There is little to no camber adjustment in the stock suspension. (camber wise)
So a good it's usually a good idea to get camber bolts for the front so you can guarantee that you can get the fronts even.

The rears would also need LCA's, but most just use what the springs do naturally.

There is no camber adjustability stock except for minor slop in the hardware, but it's almost never enough to get you 0.1 degrees difference.

Bolts are less about even for the front, and more "why the fuck didn't Subaru put camber bolts in this thing oh God it sucks without camber" if you are interested in performance. A modest -1.5 up front is just more grip for less than a tank of gas and you'll always want them in there.