[///MPhatic]

Originally Posted by AmuroRay

Literally just search KW rebuild and that's all I've seen from the brand. They are also twin tube typically, and those are not as robust as most monotube.
https://f87.bimmerpost.com/forums/sh...d#post30182665
https://f30.bimmerpost.com/forums/sh....php?t=1312679

Is this a joke?

The first thread is from someone that bought a used set with no idea how they were treated, and the second set is from 2016?

Find me multiple threads where people who have street-driven their MPS and had leak issues or don't bother really.

[AmuroRay]

Originally Posted by ///MPhatic

Is this a joke?

The first thread is from someone that bought a used set with no idea how they were treated, and the second set is from 2016?

Find me multiple threads where people who have street-driven their MPS and had leak issues or don't bother really.

I literally didn't say anything about MPS - I said KW. I'm not here to argue and I don't care to "prove" anything to anyone. I saw multiple threads were KWs have been said to need rebuilds - at a rate far more than any other brand. It's not just on this platform, it's across ALL of them.

I'm not sure why everything is so personal to everyone on this forum.

[///MPhatic]

Originally Posted by AmuroRay

I literally didn't say anything about MPS - I said KW. I'm not here to argue and I don't care to "prove" anything to anyone. I saw multiple threads were KWs have been said to need rebuilds - at a rate far more than any other brand. It's not just on this platform, it's across ALL of them.

I'm not sure why everything is so personal to everyone on this forum.

No disrespect! You've been around, you're a smart guy, people look to you for advice all the time, so I just think you should be more careful what you say.

The fact that the MPS is made by KW to BMW's specs is common knowledge, and the MPS has few issues that I can find. If you can find more, and a common theme that they are bad for street use, please do so.

IME most guys running KWV3 instead of the MPS are doing so to either track the car, or to lower it much lower than the MPS will go, both of which can shorten the life of the suspension if not dialed correctly for those situations.

I'm happy to change my mind about it though.

I consider OG Shark to be a guru in this area, so maybe he can chime in.

[AmuroRay]

Originally Posted by ///MPhatic

No disrespect! You've been around, you're a smart guy, people look to you for advice all the time, so I just think you should be more careful what you say.

The fact that the MPS is made by KW to BMW's specs is common knowledge, and the MPS has few issues that I can find. If you can find more, and a common theme that they are bad for street use, please do so.

IME most guys running KWV3 instead of the MPS are doing so to either track the car, or to lower it much lower than the MPS will go, both of which can shorten the life of the suspension if not dialed correctly for those situations.

I'm happy to change my mind about it though.

I consider OG Shark to be a guru in this area, so maybe he can chime in.

All gravy, appreciate the clarification.
I just have been browsing FS threads for a while, just for the sake of it - And I see ‘a lot*’ of rebuilds for KW. I just saw one that was noted to have 10k on it (F30) these are old threads here and there, so who knows what was done and how they were driven. It’s just something to be aware of.
Ex https://f30.bimmerpost.com/forums/sh...W#post20247061


*this does not factor in how many people can afford these mid range suspensions and then go on to sell or give a review. It’s not an exhaustive scientific measurement, just observation. Maybe the V3 sells more so it appears more vs other models.

[OG Shark]

Originally Posted by ///MPhatic

No disrespect! You've been around, you're a smart guy, people look to you for advice all the time, so I just think you should be more careful what you say.

The fact that the MPS is made by KW to BMW's specs is common knowledge, and the MPS has few issues that I can find. If you can find more, and a common theme that they are bad for street use, please do so.

IME most guys running KWV3 instead of the MPS are doing so to either track the car, or to lower it much lower than the MPS will go, both of which can shorten the life of the suspension if not dialed correctly for those situations.

I'm happy to change my mind about it though.

I consider OG Shark to be a guru in this area, so maybe he can chime in.

Oh lord far from a guru for sure

I think the main thing with the rebuilds is what you hit on earlier when you said most guys with the MPS & KW don't use them that "hard". That will for sure extend the rebuild/replacement interval. Most MPS kits are not driven hard (and I'm not saying that like it is a bad thing) so you do not see this come up very often. One thing to keep in mind here too is when not driven hard the slow depreciation in performance can be almost imperceptible. I would bet there are quite a few MPS users out there that do not realize they could benefit from a refresher. Breakages are also going to be less with easier usage. With the KW alternative you start to see more users that are interested in either lowering more like you mentioned or a bit of track work. The lowering can absolutely be harsh on suspension components and axles. This can be corrected but more often then not is accepted as a part of what happens when you play the game. I do think with the KW you have more cases of harder usage which will bump the service interval up over the MPS. Not that there is much difference between the two but more usage driven in this case. I'm still not a fan of the MPS approach - the front rates are still relatively soft and too reliant on the dampers to help control the body - but I haven't seen much of a quality issue or anything like that with them.

One thing that does irk me with the MPS is that if BMW thinks it is a better overall solution why did they give us the stock crap in the first place!!

[///MPhatic]

Originally Posted by OG Shark

Oh lord far from a guru for sure

Don't be so humble, you know your isht!

Originally Posted by OG Shark

I think the main thing with the rebuilds is what you hit on earlier when you said most guys with the MPS & KW don't use them that "hard". That will for sure extend the rebuild/replacement interval. Most MPS kits are not driven hard (and I'm not saying that like it is a bad thing) so you do not see this come up very often. One thing to keep in mind here too is when not driven hard the slow depreciation in performance can be almost imperceptible. I would bet there are quite a few MPS users out there that do not realize they could benefit from a refresher. Breakages are also going to be less with easier usage. With the KW alternative you start to see more users that are interested in either lowering more like you mentioned or a bit of track work. The lowering can absolutely be harsh on suspension components and axles. This can be corrected but more often then not is accepted as a part of what happens when you play the game. I do think with the KW you have more cases of harder usage which will bump the service interval up over the MPS. Not that there is much difference between the two but more usage driven in this case. I'm still not a fan of the MPS approach - the front rates are still relatively soft and too reliant on the dampers to help control the body - but I haven't seen much of a quality issue or anything like that with them.

Perfect, thank you.

Originally Posted by OG Shark

One thing that does irk me with the MPS is that if BMW thinks it is a better overall solution why did they give us the stock crap in the first place!!

It was all about the price-point, and not creating better performance than the F80/F82, which they were dangerously close to already.

[Joebie]

OG Shark Whats the lowering range on the Nitrons? Does it have to be slammed or can i keep it relatively close to stock height?

I do want a little bit lower but not by much at all.

Thanks!

[OG Shark]

Originally Posted by Joebie

OG Shark Whats the lowering range on the Nitrons? Does it have to be slammed or can i keep it relatively close to stock height?

I do want a little bit lower but not by much at all.

Thanks!

Plenty of height adjustment - definitely not forced into slamming it. I prefer to keep my street cars around oem or maybe a hair lower as well. Can actually go a bit higher than oem all the way down to full slammed and anywhere in between.

[s54_guy]

Ohlins RT is on sale right now for $2871 @ tire rack. I've just picked up a set and they were delivered in 1 day. Cheapest ive seen anywhere and free shipping.

https://www.tirerack.com/suspension/...e&autoModClar=

[gichoke]

FYI I have confirmed in the past that KW will NOT rebuild the MPS, since they view it as a BMW product, even though they built it! From other stories on this forum, when people have issues out of warranty, they either have to pay for a whole new strut, or just sell it and get another brand. I couldnt find anyone else besides KW that rebuilds KW suspensions, but maybe someone else knows something.

"Good afternoon,



Thank you for reaching out to KW automotive with your questions regarding our shock service. If these are M performance coilovers those will be a private label that is exclusive to BMW motorsports and you would have to contact them for service."