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Linear spring rate

healthynine

Ready to race!
Location
Oak Creek, WI
How is the sportline not progressive? I also have that spring, and they are definately progressive design. It made even more obvious as you lower the car from the jack as some of the coils are compressed moreso than others.

I did not know you could buy linear aftermarket springs for the gti (short of buying coilovers)
 

2003rex

Ready to race!
Location
SoCal
Car(s)
Yes lol
Yeah Im not a big fan of progress spring set ups on anything, I'll look into those 3 set ups you provided Boston

Thanks for the input everyone!
 

2003rex

Ready to race!
Location
SoCal
Car(s)
Yes lol
I was looking at those too. I believe I'm going to go with K-Sport especially with the ability to get custom rates from them (so I've heard) and swap the rears to around 300lbs.
 

wronghand

Passed Driver's Ed
Location
oklahoma
I also had a set of pro-kit in hand. the front looks like linear, but the rear is definitely progressive.

Eibach claims they're progressive, but in fact they're not. :wink:

I had some Eibach Sportline and pro in my own hands and it's clearly
obvious they're linear.
It's just marketing because most noobs think progressive means better.
Eibach Pro and Sportline are linear rated like the Eibach made DG springs.
 

EL_3grab

Beast from Middle East
Location
AJ - UAE
There are two versions, NA & Euro Eibach

NA Eibach are progressive

Euro Eibach are linear

I have this comparison for different euro Eibach springs across VAG A5 Chassis, I've done this by comparing the TUV certificates on the euro site

*All euro Eibach springs are linear
*Max Recommended Kg has nothing to do with the actual spring rate
*The below info means nothing :biggrin: if you cant order springs individually

Code:
Front
	Max Recommended Kg	Spring Hight in mm	Eibach P#

	1005kg			249mm			11-15-009-01-VA
	1040kg			251mm			11-15-009-02-VA
	1010kg			265mm			11-15-007-01-VA
	1080kg			270mm			11-15-007-02-VA
	1150kg			270mm			11-15-007-03-VA
	1155kg			251mm			11-15-007-04-VA
	1040kg			264mm			21-15-007-01-VA
	1040kg			270mm			21-15-007-02-VA
	1050kg			276mm			11-79-004-01-VA
	1160kg			295mm			11-85-012-02-VA
	1200kg			284mm			11-85-012-03-VA
	1060kg			279mm			11-85-012-01-VA


Rear

	Max Recommended Kg	Spring Hight in mm	Eibach P#

	0770kg			296mm			11-15-001-01-HA
	1005kg			301mm			11-15-007-01-HA
	1125kg			303mm			11-15-007-04-HA
	0985kg			296mm			11-15-007-15-HA
	0785kg			267mm			11-15-009-01-HA
	0885kg			273mm			11-15-009-02-HA
	0930kg			285mm			21-85-014-01-HA
	1010kg			288mm			21-15-007-01-HA
	1005kg			295mm			21-15-007-03-HA
	1130kg			315mm			11-85-012-01-HA
	1010kg			291mm			11-85-014-05-HA
	1230kg			305mm			11-85-016-10-HA
 

Simmsled

Parking Garage > Tree
Location
Indianapolis
Car(s)
its not special.
OP...

Get:
-Koni Sports (yellows)
-Ground Control sleeves (threaded with perches)
-Hyperco linear rate springs (350front 250 rear--- is a real good start)

Cheap, awesome, interchangeable, adjustable.
 

abacuc

New member
Location
Italy
Given no more DD usage I'd cross over from
For a Mk5 GTI, start with 350f/250r and work from there.

-Hyperco linear rate springs (350front 250 rear--- is a real good start)

Are you sure? you should consider the concept of motion ratio...
On the PQ35-36 platform it is 0.65, so assuming that it is 1 in the front (actually more realistically 0.97-0.98), with these spring rates it would be like having 350 f - 162.5 r
 

Attachments

  • PQ35 rear susp. Motion Ratio.pdf
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Last edited:

Simmsled

Parking Garage > Tree
Location
Indianapolis
Car(s)
its not special.
Are you sure? you should consider the concept of motion ratio...
On the PQ35-36 platform it is 0.65, so assuming that it is 1 in the front (actually more realistically 0.97-0.98), with these spring rates it would be like having 350 f - 162.5 r

You should consider the concept of sway bars and weight distribution chief.

What is 162.5/350

What is the weight distribution for the MKV GTI?

If you really want to do this... you better suit up.
 
Last edited:

abacuc

New member
Location
Italy
You should consider the concept of sway bars and weight distribution chief.
Mate, I'm waiting for your teaching on this matter:bow:... maybe is there no front swaybar on mk5?:biggrin:
 

VMRWheels

Go Kart Champion
Location
Anaheim, CA
OP...

Get:
-Koni Sports (yellows)
-Ground Control sleeves (threaded with perches)
-Hyperco linear rate springs (350front 250 rear--- is a real good start)

Cheap, awesome, interchangeable, adjustable.

Good advice for an affordable setup!
 

Bunnspeed

Salad Tosser
Location
MA
Car(s)
2008 GTI four door
Racelands. /thread
 

the bruce

Go Kart Champion
Location
land
Car(s)
Golf GTI Mk.V 2008
btw do you know the spring rates for them? are they stiffer then DG springs?

Sadly not, but from what I remember there's a thread with spring rates on this forum.
(guess they might be in the 30 N/mm area)


How is the sportline not progressive? I also have that spring, and they are definately progressive design. It made even more obvious as you lower the car from the jack as some of the coils are compressed moreso than others.

There's always some slight ''progressiveness'' in a linear spring. But I only know the Euro-specs that look like these:








There are two versions, NA & Euro Eibach

NA Eibach are progressive

Euro Eibach are linear


Thank you. Quite interesting. :wink:
 
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