All Things Mk5 > Performance Modifications
TT-RS suspension fits GTI???
the bruce:
racing springs = linear
OEM = linear
Eibach = linear
most lowering springs = progressive
:wink:
TT-Turbo:
Actually Eibach springs are progressive. And you can get progressive racing springs, in fact it's used on the vast majority of race cars. That way you can get a softer car at slower speed corner with less downforce and a car that compresses less when hitting the harder part of the spring under high load/higher downforce levels. Bump rubber also play a big part too but you get the idea.
Anyway bringing this back to topic I would go with progressive aftermarket springs rather than OEM TTRS springs for your application. Near 150KG more compressing those springs can't be good. Get some springs that are made to cope with that load originally.
the bruce:
--- Quote from: TT-Turbo on January 09, 2012, 09:20:11 pm ---Actually Eibach springs are progressive. And you can get progressive racing springs,
--- End quote ---
All Eibach springs for Mk.V and Mk.VI are linear. Eibach Pro are linear, Eibach Sportline
are linear and Volkswagen OE by Eibach are linear.
Don't get fooled when Eibach claims they are 'progressive' as they are not.
Ok, there are few car specific springs for mild racing purpose that are progressive.
Few. Very few.
All pure racing stuff is 60 mm and linear. If you think you need a progression you
have to mate two springs.
--- Quote from: TT-Turbo on January 09, 2012, 09:20:11 pm ---in fact it's used on the vast majority of race cars.
--- End quote ---
You're wrong mate.
--- Quote from: TT-Turbo on January 09, 2012, 09:20:11 pm ---That way you can get a softer car at slower speed corner with less downforce and a car that compresses less when hitting the harder part of the spring under high load/higher downforce levels. Bump rubber also play a big part too but you get the idea.
--- End quote ---
From theory this is correct and that's why some racing teams use progessive rates
(provided by a pair of springs).
--- Quote from: TT-Turbo on January 09, 2012, 09:20:11 pm ---Anyway bringing this back to topic I would go with progressive aftermarket springs rather than OEM TTRS springs for your application. Near 150KG more compressing those springs can't be good. Get some springs that are made to cope with that load originally.
--- End quote ---
Using TT-RS springs seems somehow like an experiment, if Jake wants to take
this small risk - why don't he?
I'd avoid any progressive spring, because they handle worse than linear rated
springs. That's why Eibach don't sell them for the Golf and why Audi, BMW and
Volkswagen supply their cars with linear ones.
TT-Turbo:
--- Quote from: the bruce on January 15, 2012, 09:58:22 pm ---
All Eibach springs for Mk.V and Mk.VI are linear. Eibach Pro are linear, Eibach Sportline
are linear and Volkswagen OE by Eibach are linear.
Don't get fooled when Eibach claims they are 'progressive' as they are not.
--- End quote ---
Incorrect, Eibach springs are progresive. Have a look on their website.
--- Quote from: the bruce on January 15, 2012, 09:58:22 pm ---Ok, there are few car specific springs for mild racing purpose that are progressive.
Few. Very few.
All pure racing stuff is 60 mm and linear. If you think you need a progression you
have to mate two springs.
--- End quote ---
Every racing car I have driven since 2005 up to current has used progressive springs. It's really not that uncommon and the way things are moving progressive springs are used a great deal. Maybe not so much in road going track cars. You don't need to have two springs to get a progressive rate, this can be achieved in one. Again I know this as Eibach made custom progressive springs that I used.
--- Quote from: TT-Turbo on January 09, 2012, 09:20:11 pm ---in fact it's used on the vast majority of race cars.
--- End quote ---
--- Quote from: the bruce on January 15, 2012, 09:58:22 pm ---You're wrong mate.
--- End quote ---
I'm really not. :happy2:
--- Quote from: TT-Turbo on January 09, 2012, 09:20:11 pm ---That way you can get a softer car at slower speed corner with less downforce and a car that compresses less when hitting the harder part of the spring under high load/higher downforce levels. Bump rubber also play a big part too but you get the idea.
--- End quote ---
From theory this is correct and that's why some racing teams use progessive rates
(provided by a pair of springs).
--- Quote from: TT-Turbo on January 09, 2012, 09:20:11 pm ---Anyway bringing this back to topic I would go with progressive aftermarket springs rather than OEM TTRS springs for your application. Near 150KG more compressing those springs can't be good. Get some springs that are made to cope with that load originally.
--- End quote ---
--- Quote from: the bruce on January 15, 2012, 09:58:22 pm ---Using TT-RS springs seems somehow like an experiment, if Jake wants to take
this small risk - why don't he?
I'd avoid any progressive spring, because they handle worse than linear rated
springs. That's why Eibach don't sell them for the Golf and why Audi, BMW and
Volkswagen supply their cars with linear ones.
--- End quote ---
Not saying he shouldn't go with the TTRS spring, but I believe the TT handles better on Eibach springs. Every person I know that has gone to H&R or Eibach springs has also said so. 15+ people can't be wrong.
I'm just trying to give some insight and help out. :smiley:
danishmkvgti:
As i got the FK lowering springs at a very good price and already have them makes me tempted to use them.
BUT on the other hand they are made to accomodate the typical touran user, with a baret and pipe.
What i want is a GTI aftermarket spring feeling in the Touran, that's also why i plan to fit S3 alloy lower control arms front along with S3 alloy hubs. At the same time the GTI brakes will be fitted, (or maybe the R32 fronts i have spare :laugh: ).
I wonder if the TT-RS springs will accomodate a more sporty ride than the FK lowering made for the Touran even though they are made for a car 150 Kg less??? :ashamed:
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