[tom @ eas]

Originally Posted by g80inthePNW

I was referring to the V3 setup that is already on the vehicle.

Same applies to V3/V4, as they both retain stock strut mounts. V4/V5 KW Clubsports come equipped with Camber Plates and can use different springs.

[RACE M3]

Swap out the springs for oem rates +\- 10%

[nardobenz]

Originally Posted by RACE M3

Swap out the springs for oem rates +\- 10%

How would that work?

[RACE M3]

Originally Posted by nardobenz

How would that work?

You simply swap them out and you're good to go! This is something I would consult someone with experience on. They make suggest to go with a longer/short spring if there's a drastic difference in lbs.

You'll have the benefit of a tunable shock, lowered ride and you could technically get a spring as soft as a luxury car.

tom @ eas Can help you get squared away with this.


Another thing to consider is your wheel size. The more wheel, the less tire. Tires do a lot of dampening. I'm running square 827 20" and there was a very noticeable difference in comfort going up only 1".

My wife's car came with 20s and I swapped her wheels out for 18s to soften it up a bit for her. She wants the sporty look without the sporty ride.

[Tightt]

KW HAS kit here. The ride quality is par, if not slightly better, that stock. That's with the front all the way lowered and the rear leveled to the front. It's a great setup imo....I'm very happy.

[M3SQRD]

Originally Posted by RACE M3

You simply swap them out and you're good to go! This is something I would consult someone with experience on. They make suggest to go with a longer/short spring if there's a drastic difference in lbs.

You'll have the benefit of a tunable shock, lowered ride and you could technically get a spring as soft as a luxury car.

tom @ eas Can help you get squared away with this.


Another thing to consider is your wheel size. The more wheel, the less tire. Tires do a lot of dampening. I'm running square 827 20" and there was a very noticeable difference in comfort going up only 1".

My wife's car came with 20s and I swapped her wheels out for 18s to soften it up a bit for her. She wants the sporty look without the sporty ride.

Don’t you also need camber plates because linear straight race springs won’t work with stock strut mounts?

Does KW now use a 60 mm inner diameter (ID) on the lower tapered spring that comes with V3? In the past you’d have to machine the seat to make a v3 work with a 60 mm ID springs or buy a new lower spring seat already made for 60 mm ID springs. I think it’s intentional because they want you to spend more money on their CS line to get linear race springs.

[christianb5s4]

Originally Posted by Tightt

KW HAS kit here. The ride quality is par, if not slightly better, that stock. That's with the front all the way lowered and the rear leveled to the front. It's a great setup imo....I'm very happy.

I find the same. After swapping to MP HAS, comfort mode has improved. It's less bouncy and better match with the OEM dampers yet never harsh.

Sport and Sport+ feel even better now too, though stiffer. Best way I can describe it is it feels as if it's how the car was supposed to come from factory.

[RACE M3]

Originally Posted by M3SQRD

Don’t you also need camber plates because linear straight race springs won’t work with stock strut mounts?

Does KW now use a 60 mm inner diameter (ID) on the lower tapered spring that comes with V3? In the past you’d have to machine the seat to make a v3 work with a 60 mm ID springs or buy a new lower spring seat already made for 60 mm ID springs. I think it’s intentional because they want you to spend more money on their CS line to get linear race springs.

You can order direct replacements for them. I can’t give you specifics without an experience on this particular car; but I’ve swapped springs on other cars to dial it in to my liking. I’ll leave the details to the pros selling it.

[M3SQRD]

Originally Posted by RACE M3

You can order direct replacements for them. I can’t give you specifics without an experience on this particular car; but I’ve swapped springs on other cars to dial it in to my liking. I’ll leave the details to the pros selling it.

My question had nothing to do with “specifics”. The KW V3 comes with a tapered spring (large ID at the top, small ID at the bottom) so swapping rates isn’t as simple as buying a new spring with a new rate and a different length. “You simply just swap them out” doesn’t work. Do you even have V3 or know anything specific about them?

BTW, tires have virtually no damping (0.1-0.4% of critical damping). The dampers have to control the sprung mass, unsprung mass and the tires. I think you’re talking about compliance, not damping (viscous or structural). Two very different things.

[RACE M3]

Originally Posted by M3SQRD

My question had nothing to do with “specifics”. The KW V3 comes with a tapered spring (large ID at the top, small ID at the bottom) so swapping rates isn’t as simple as buying a new spring with a new rate and a different length. “You simply just swap them out” doesn’t work. Do you even have V3 or know anything specific about them?

BTW, tires have virtually no damping (0.1-0.4% of critical damping). The dampers have to control the sprung mass, unsprung mass and the tires. I think you’re talking about compliance, not damping (viscous or structural). Two very different things.

Lots of people have swift springs on their v3s. Do you think everyone with v3 are using only the included springs?

[M3SQRD]

Originally Posted by RACE M3

Lots of people have swift springs on their v3s. Do you think everyone with v3 are using only the included springs?

So did these lots of people just buy swift springs and directly swap the v3 tapered spring with the swift constant ID spring on the v3 damper without doing anything else? I honestly don’t know and that’s why I originally asked you because you said in an earlier post it’s a simple swap. If it’s so simple why haven’t you answered my questions? I think it’s because you can’t answer them. I also find it interesting that you use swift springs by name. Is the swap only possible with swift springs?

[specced]

Originally Posted by M3SQRD

So did these lots of people just buy swift springs and directly swap the v3 tapered spring with the swift constant ID spring on the v3 damper without doing anything else? I honestly don’t know and that’s why I originally asked you because you said in an earlier post it’s a simple swap. If it’s so simple why haven’t you answered my questions? I think it’s because you can’t answer them. I also find it interesting that you use swift springs by name. Is the swap only possible with swift springs?

My understanding is Kw uses progressive springs, lots of people swap them for linear springs. You can only do this at a certain spring rate because of how the dampers are valved, or the ride will be worse. You’d probably have to consult with kw regarding what spring rates can be used as it shouldn’t deviate too much.

Generally the best springs are either Swift or Hyperco, both known for consistency and quality control, and you can get them in basically whatever rate you want.

[M3SQRD]

Originally Posted by specced

My understanding is Kw uses progressive springs, lots of people swap them for linear springs. You can only do this at a certain spring rate because of how the dampers are valved, or the ride will be worse. You’d probably have to consult with kw regarding what spring rates can be used as it shouldn’t deviate too much.

Generally the best springs are either Swift or Hyperco, both known for consistency and quality control, and you can get them in basically whatever rate you want.

I know what needs to be done. He said it’s a simple swap so I wanted him to list what’s required. The v3 is a street damper with limited damping capability so it can’t handle a large increase in spring rate. Also, kw will not change the valving on the v3 twin-tube damper. They’ll rebuild it but will not changes the valving. I had looked into kw motorsport dampers about a decade ago but wasn’t thrilled with their support. So I’m running three MCS setups and one JRZ setup on my two e92 M3s, f82 and f22.

[RACE M3]

Originally Posted by M3SQRD

I know what needs to be done. He said it’s a simple swap so I wanted him to list what’s required. The v3 is a street damper with limited damping capability so it can’t handle a large increase in spring rate. Also, kw will not change the valving on the v3 twin-tube damper. They’ll rebuild it but will not changes the valving. I had looked into kw motorsport dampers about a decade ago but wasn’t thrilled with their support. So I’m running three MCS setups and one JRZ setup on my two e92 M3s, f82 and f22.

The conversion is about reducing spring rate.

Relax… what really wanted to mention was your cats. Woooooooow! Very impressed.

[M3SQRD]

Originally Posted by RACE M3

The conversion is about reducing spring rate.

Relax… what really wanted to mention was your cats. Woooooooow! Very impressed.

I’m fine. You still haven’t said what’s required to swap springs on a set of V3s but “it’s easy”. Sorry, Im not a cat person.