Installed my Endura-Tech coilovers about 3 weeks ago and I love them! 7k F 5k R and I have them set in the middle. Very mild-mannered for daily duty and can still hit up the twisties with more confidence. I haven't pushed them to the limits yet as my tire set up is for daily driving.

Driving around town is a little more "bumpy" than stock but not OMGZBREAKMYNECKZ hard.

specs:
Endura-Tech coilovers
7k Front
5k Rear
both set to "medium"

Alignment:
- 1.0 F / 0 toe
-0.5 R / 0 toe

Tires:
Kuhmo AST
235/45/17

Wheels:
OEM enkeis 17x8

I'll be trying out this set up (sans the wheels and tires) next autox season.

OT: drove around today with 4 grown adults and there was no bottoming out and/or rubbing of any kind.

 

A spring rate of something like a 7K front/8K rear would probably work better. Unless you've got a big rear bar, your current setup will probably have more understeer than stock when you decide to lean on it. I was very impressed with the Evo X Endura Techs, but haven't had a chance to ride in a CT9A with Endura Techs.

l8r)

 

why would you want 8k rear, stiffer than the front? Keep in mind the front of the car is heavier due to the drivetrain up there... Endura-tech has put tons of time and R&D into these and their spring rates to make them ideal for performance and comfort in everyday driving conditions with potential for track use. Im just wondering what you're basing the spring rate suggestion on? We deal with Endura-Tech directly, and I can always send them feedback from users, so I'd be interested to know! Thanks

Bump for endura-techs. we have sold multiple sets recently and are big proponents of their everyday usability and build quality.

 

Two reasons, the geometry in the rear is different than the front and you need a stiffer rear to encourage a little rotation in a car that is very front heavy. The rear coilover connection point to the lower A arm is further inboard than the front. You need a heavier spring back there to have the same effective force as the fronts. Also, for the same reason some guys like big rear sways, a stiffer rear end will cut out a little of the understeer we have to deal with in the Evo.

 

Enduratech needs to do a little more RD on the Evo platform.



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CT9A evos are designed to run a heavier rear spring rate.

 

https://www.evolutionm.net/forums/ev...-your-evo.html

Its called motion ratio.

 

Spring rates do not equal wheel rates, that is why.

http://www.miracerros.com/mustang/t_wheel_rate.htm

Scorke

 

thanks for the feedback guys. I will be sure to relay this to endura-tech.

 

guys one thing to keep in mind with these is Endura-Tech did not design these to be used for the track. The spring rates are the way they are from the factory to be comfortable and usable on the street primarily. That being said Endura-Tech offers beefier springs that can replace the "stock" ones.

So when you guys say that you need stiffer in rear to encourage rotation and Endura-Tech needs to do more R&D - you are not thinking about these in terms of their primary purpose. They are not meant to be a track coilover so they dont want rotation or stiff ride. Quality manufacturers design things to have a purpose, unlike some of these generic brands like BC who just put something out there @ a cheap price to make sales. They arent good enough for track, and not comfortable on the street. Endura-Tech has made their focus street comfort and usability with the option to go to the track.

PM me with any questions.

 

Whether it be street or track, rates are rates. And those will not handle optimally and will plow in every turn. Which I would argue is far more dangerous on the street than on the track (going to hard on street = no run off, curbs, gravel roadsides, etc.).

The stock rates are 3.2k front and 4k rear. Their primary use - street. Notice, they still have more rear rate due to the motion ratio of the stock suspension geometry. Could you take the Enduratechs with 7k/5k on the track, yes. Will they handle very well, no.

Quality manufacture or not, if they were top quality, they would understand motion ratio and would design accordingly. I agree, BC/Megan are even lower on this scale. Even better brands, KW3, do not come setup right. Which is why GTWorx and Robi offer revalved, correct rate versions. Takes advantage of their construction, but corrects the off the shelf rates.

 

Zinnnnggg.

Scorke

 

What optional spring rates are available?




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i believe they also offer 8kg and 9kg.