Bilstein Damptronic pics.

[Racecomp Engineering]

OEM BRZ is 146/189
OEM FR-S is 124/205

lbs/in

Stock is very bumpstop active for both cars.

We have a 250/250 spring with 20mm drop and include shortened bumpstops. Also a 280/290 spring.

- Andy

[DougW]

Wow that's a lot softer than I thought, these are all the things I need to play with as I said the shocks are just another tool in the tool box. With the rear spring ratio not the wheel ratio because of the lower arm mounting why would the rear and front be the same 250 /250 more like 250 /300. More things to play with, need that E spring again.
DougW

[aCab]

Sent you a PM, Doug.

Relocating to Atlanta at the end of Sept. Much track experience and way too much seat time at Deal's Gap to be considered healthy.
@CSG Mike knows me.

[CSG Mike]

I can vouch for @aCab; dude can drive.

[OICU812]

Originally Posted by RYU

Thank you.

Will follow this thread intently.

Not sure about everyone else but a 20-25mm drop using the stock springs (in the interest of cutting down costs) would be ideal :happy0180:

Agree 100% definitely want bit of low. 25mm or 1" IMO is perfect looks and function wise. Having it lower then stock will attract a much larger interest as well IMO.

[Calum]

Originally Posted by DougW

Wow that's a lot softer than I thought, these are all the things I need to play with as I said the shocks are just another tool in the tool box. With the rear spring ratio not the wheel ratio because of the lower arm mounting why would the rear and front be the same 250 /250 more like 250 /300. More things to play with, need that E spring again.
DougW

They explained it before, I'll try to paraphrase as best I can. I'm not a suspension expert.

If they would have left the car at stock ride height they probably would have staggered the rates. But, with the strut suspension up front & multi link rear combined with the lowered ride height and uneven weight distribution, these rates provide similar roll resistance front & rear vs the stock setup. Also, after dynoing the stock dampers these rates worked well with the damping curves. These rates also provide similar ride characteristics front and rear, something that was missing from my FRS.

[Calum]

Originally Posted by Racecomp Engineering

These would be pretty cool with RCE Yellow springs....

- Andy

Is that what you would pair with them? Or would your newer 280 lb/in springs be a better match?

[DougW]

Sounds like some where around 275 and 20mm shorter is a good place to start regardless of the spring brand or diameter which is what I thought I had. I guess ass-u-me got me again I should of measured them while I had them apart including the bump rubber rate.
DougW

[OICU812]

Originally Posted by DougW

Sounds like some where around 275 and 20mm shorter is a good place to start regardless of the spring brand or diameter which is what I thought I had. I guess ass-u-me got me again I should of measured them while I had them apart including the bump rubber rate.
DougW

Nice to hear 25mm a full inch would be damned perfect for I think almost anyone, that way you get your clearances and many lose the gap. Now if these spit out unicorns like they sound they will better hire a money counter.

[ft_sjo]

Originally Posted by Calum

These rates also provide similar ride characteristics front and rear, something that was missing from my FRS.

Are you after a luxury barge or a sports car? Different front/rear ratios are usually to keep the car flat over large deviations in the road for comfort-sake.

I know that with my stock suspension (GT86, assume the same as FR-S), when I get a good amount of air, the damping is extremely good and well composed with no sign of a front/rear issue.

But then I come from the land of rallying, not the land of perfectly flat race tracks, so I guess build what you need.

[Calum]

Originally Posted by ft_sjo

Are you after a luxury barge or a sports car? Different front/rear ratios are usually to keep the car flat over large deviations in the road for comfort-sake.

I know that with my stock suspension (GT86, assume the same as FR-S), when I get a good amount of air, the damping is extremely good and well composed with no sign of a front/rear issue.

But then I come from the land of rallying, not the land of perfectly flat race tracks, so I guess build what you need.

luxury barge? What the hell are you talking about? Seriously, are you just looking for a reason to be negative?

The stock rates gave a different feel front vs. rear, these don't. Because our roads aren't perfectly flat having a car with consistent and predictable behavior allows for more confident driving when I get closers the edge of traction.

[ft_sjo]

Originally Posted by Calum

luxury barge? What the hell are you talking about? Seriously, are you just looking for a reason to be negative?

The stock rates gave a different feel front vs. rear, these don't. Because our roads aren't perfectly flat having a car with consistent and predictable behavior allows for more confident driving when I get closers the edge of traction.

Whoa there, cowboy. What do you feel is negative in my post? I thought stating some facts about spring ratios and perceived behaviour of the OE spring ratios would be a positive thing. Apparently not what you wanted to hear, so I give my apologies!

[Calum]

Originally Posted by ft_sjo

What do you feel is negative in my post?

Here you make an attempt to insult my goals for my car without even considering that I said nothing about ride quality, only that I found the springs I'm using give similar characteristics front and rear.

Originally Posted by ft_sjo

Are you after a luxury barge or a sports car?

Here you generalize and make assumptions on where I live, despite having no knowledge of what the roads and tracks are like here.

Originally Posted by ft_sjo

But then I come from the land of rallying, not the land of perfectly flat race tracks, so I guess build what you need.

Originally Posted by ft_sjo

I thought stating some facts about spring ratios and perceived behaviour of the OE spring ratios would be a positive thing. Apparently not what you wanted to hear, so I give my apologies!

Stating facts would have been a positive thing, but you didn't. You attempted to change my opinion to align with your perception based on yet another generality.

[ft_sjo]

Yet another thread derailed by vendor love.