Do the RCE yellows and tarmacs/greys lower the same? If not, how much lower per? Which lowers more?

These tarmacs/greys should be added to the ft86 springs/coilovers rates/specs database list ;)

Price would be great too.

They lower the same amount.

Any new/different users/reviews of these springs? :)

@RCE:
Are you able to make custom "drop-in/replacement" lowering springs with custom stiffer rates for use with better dampers (koni/bilstein)?

I know these Tarmacs are already designed to do that, and be mated with a better shock, to be more intended and aimed at the occasional performance/track/autox enthusiast. But, given that these are intended for occasional track use, why not go stiffer?

Seeing this review, and how the user eventually wants to go with a stiffer and better coilover, and also racing against other cars with 100lbin stiffer springs, It's clear that the user wanted to go with a more aggressive setup and just got teased by the spring's decent 5kg rate and went with a stiffer more aggressive real coilover.

So why not just cut to the chase and be the first/only to release a "lowering spring" with truly coilover-like aggressive spring rates meant for track? I know you mentioned your current Tarmac Greys give the suspension a coilover-like feel...but it's still only 5kg (yes, the most aggressive lowering-spring out there ..but still hardly a real "coilover rate"...just being honest. 5kg option is considered a Soft option rate for coilovers).. why not go with a true spring rate found on good coilovers? Maybe just a 100lbin stiffer increase than your Tarmac Grays is reasonable, no? I bet 7kg or high 6kg would be perfect for Konis/Bilsteins (We're not talkin 9-14kg here).

If you had a set of 6.5-7kg lowering springs, I would definitely buy them over GC sleeves or any other "cheaper/budget coilover." And, I'm betting many others would buy them too ;)

1. It may not be physically possible. You have limitations in spring rate simply because thicker spring wire for firmer rates might cause coil bind, where the spring fully closes before the shock runs out of travel. That's bad. Alternatively you could have them come loose at full droop designed a different way. I think going much firmer than the tarmac springs at our 20 mm drop and that becomes a problem. I forget if its front or rear.

2. Most people that need rates firmer than 5k will want a coilover. I know not everyone, but most people. The tarmacs were designed for a niche if people that want a firmer fixed perch set up but don't want a coilover or very firm rates.

That's my 6:20 AM in the airport typed on my phone answer. :)

- Andy

These springs went on my car today with the hvt camber plates and koni yellows. I ran the rce yellow springs with my konis last year so hopefully I can make a review here soon.

Let us know the differences and if it's worth it.

Thanks.

Any further review on these?
I bought some Koni's and RCE yellows and will be looking at the Tarmac' s with some top hats.


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I installed the RCE Tarmac springs + Koni's over the weekend. Here's a quick unprofessional review based on the past few days of driving:

The springs feel significantly stiffer than stock (of course!) and good dampers definitely made a difference to help combat the extra stiffness. Body roll is reduced significantly and the car feels planted and stable when I go around long sweeping turns.

On the softest setting, this combo is very DD-able. On the stiffest setting, I can feel every. single. bump. on the road... I guess good feedback via the steering wheel and pedals. For me I would say this was just barely DD-able, but i'm sure my hands will start feeling numb after a while from it. I also tried stiff front/soft rear (my planned autoX setting) and that was a little weird feeling. As expected, front half of the car was quite bumpy and the rear was very soft.

No matter what setting, hitting bumps felt similar to stock... just a bit harsher. The drop is very small, which was exactly what I was looking for (because New England). It doesn't look 'stanced' or whatever, but you won't care when you're going around corners.

Overall, i'm very happy with this combo. This is a very decent setup for a lot less money than coilovers. I think this was a nice balance between comfort/handling for a DD with monthly autoX duty. (I have yet to do AutoX with the new setup)

Disclaimer: I've been running with a disconnected front sway bar since I stripped the hex bit on both sides. I'll be installing some new endlinks later today actually. Perrin makes an endlink that uses an actual bolt+nut combo... great for New England weather!

I'm happy to answer any questions about them or the install!

(Crappy cell phone pic of rear coilover)
http://i.imgur.com/syW0ifm.jpg

(Just a quick cell pic)
http://i.imgur.com/9XL2TVE.jpg

Very interested as I have yellows right now and am installing konis soon (need to replace a blown one first). Just wondering how big a difference it is as going any lower will seriously cause going up my driveway a PITA. Lol

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If you have yellow I would say keep them. These are not that much stiffer then what you have. I only switched because they were sent to me. I do like them a lot. But its hard to tell since I had yellows already on for a year. The yellows are great and so are these. I have had to replace my drivers koni twice now and the passenger side once. :bonk:

Which pads?

Carbotech XP12

I know this is ancient, but trying to get hard info between the two : Yellow vs tarmac...

I'm all for the added spring rate (and matching with koni or bilstein), but not trying to lower the car any more than necessary (DD in 4 season climate, so less drop is more for me) -

I get SO much mixed info on these two - both often state 20mm drop, but plenty have said that the tarmac went lower than the yellow...

Is that due to yellows usually being used on OE shocks and the tarmac require upgrading or are people just wrong?

Thanks for the help on this old thread - just figured i was tired of people's anecdotal evidence, and i'd ask the source!