Differences between ST X coilovers and Vogtland?

[0xid0]

Hi,

Im thinking to buy one of these two coilovers:

https://suspension-shop.com/st-suspension-st-x-bmw-z-series-e85.html

https://suspension-shop.com/vogtland-coilover-suspension-bmw-z4.html

I readed in internet there are the same suspension (KW V1), but with different spring in Vogtland case. Anyone knows the exact differences? Thanks!

 

[Darkangelv2]

Price-wise, these both seem great. I'd be very interested to hear of any opinions from real-world use.

 

[NeilP]

What are you looking for by upgrading to coilovers?

If you're looking for low, then your best bet is to get a set of BC's over the two above.

Either way, they're pretty much the same kit so you can't go wrong with either. Have you emailed ST directly? They were pretty helpful when I've contacted them in the past.

 

[GuidoK]

To me those 2 kits seem completely different.
The one has linear springs and the other one progressive springs...
That is quite a bit different in driving dynamics

That is, if we see the actual product.
I'm pretty sure that the vogtlandpicture is not of a z4 set though.
But from the TUV info it says that the front strut is a spring+helper spring, so the front strut is pretty certain linear.
No spring stiffness is given but their helpdesk probably can give that info (Vogtland is a large spring manufacturer....)
The rear is a cone shaped spring, so progressive I recon.

If your car is a daily driver and you drive in the fall/winter (rain, salt etc) I'd go for a set KW V1 inox.
normal coilovers have galvanic coating, and that will corrode over time.
KW inox is made of stainless steel and will keep looking as new. (with the kw v1 inox, the rear shocks are fairly standard and painted black (no inox)

 

[0xid0]

What are you looking for by upgrading to coilovers?

If you're looking for low, then your best bet is to get a set of BC's over the two above.

Either way, they're pretty much the same kit so you can't go wrong with either. Have you emailed ST directly? They were pretty helpful when I've contacted them in the past.

I want to slightly low my car, but gaining in driving dynamics without needing to make lots of adjustments..

 

[0xid0]

To me those 2 kits seem completely different.
The one has linear springs and the other one progressive springs...
That is quite a bit different in driving dynamics

That is, if we see the actual product.
I'm pretty sure that the vogtlandpicture is not of a z4 set though.
But from the TUV info it says that the front strut is a spring+helper spring, so the front strut is pretty certain linear.
No spring stiffness is given but their helpdesk probably can give that info (Vogtland is a large spring manufacturer....)
The rear is a cone shaped spring, so progressive I recon.

If your car is a daily driver and you drive in the fall/winter (rain, salt etc) I'd go for a set KW V1 inox.
normal coilovers have galvanic coating, and that will corrode over time.
KW inox is made of stainless steel and will keep looking as new. (with the kw v1 inox, the rear shocks are fairly standard and painted black (no inox)

Thanks for the reply, bud.

Im from Spain, so, the salt and rain there is not a problem. I only go to snow around 1-2 days in the entire year with my car.

So... for daily driven use, wich is the best option between these two options?

 

[GuidoK]

A linear spring has (generally) less comfort with small bumps, but has a more predictable way of compression when cornering.
So if you're a cruiser, go for a progressive spring, if you're more the sporty driver, go for linear.
So my guess is that the vogtland set will have better handling but less comfort.

 

[0xid0]

A linear spring has (generally) less comfort with small bumps, but has a more predictable way of compression when cornering.
So if you're a cruiser, go for a progressive spring, if you're more the sporty driver, go for linear.
So my guess is that the vogtland set will have better handling but less comfort.

Thanks, i will go to Vogtlands!

 

[GuidoK]

Maybe ask vogtland for their front spring rates.
KW V3 has 50N/mm (every mm compression takes 5kg) front springs (the heavy spring, the small spring does nothing and only gives pretention).
If that exceeds that by much, it will be stiff....

 

[0xid0]

Maybe ask vogtland for their front spring rates.
KW V3 has 50N/mm (every mm compression takes 5kg) front springs (the heavy spring, the small spring does nothing and only gives pretention).
If that exceeds that by much, it will be stiff....

Thanks mate, i will ask to Vogtland