[TheLender]

Hey guys i currently have a g80 M3 2023 xdrive and wanting to lower it , i do about 4-6 track days a year and was going to go the Mperformace Hass Kit or the KW kit , the KW is so much cheaper and was reading on a few forums that people who have fitted KW have had their shocks Leak over time ?? Has anyone had this happen ? Which way would you go ?

[Ervin87]

For performance and functionality, all the HAS kits are a waste of money. The car will look nicer lowered, but will ride harsher and of course will wear out the factory shocks quicker. You are simply reducing (even eliminating) travel. From a performance standpoint, HAS is not an improvement.

[WhiteF30M6Spd]

Originally Posted by Ervin87

For performance and functionality, all the HAS kits are a waste of money. The car will look nicer lowered, but will ride harsher and of course will wear out the factory shocks quicker. You are simply reducing (even eliminating) travel. From a performance standpoint, HAS is not an improvement.

This is 100% correct.

The "HAS" is total marketing BS and does more harm than good from a performance standpoint. If you want to look good lowered it does the job. Otherwise it makes the car handle much worse than OE.

The best way to think about it is, with the reduced suspension travel the shock has less time to generate force. So there is effectively less control of the damping forces which causes issues with the wheel/ contact patch.

[TopJimmy]

HAS is for street/looks. Most run lower than the install manual says to, and they wear out a damper or two.

If you track look for real coilovers.

[tom @ eas]

If serious about tracking, The KW kits don't really begin to shine until reaching the Clubsport/V4 variants. Or even better, the Nitron NTR1/NTR3

Buy once, cry later.

[TheLender]

Thanks heaps guys really appreciate it

I think I will give them a miss keep stock! Or go coilovers

[Giak]

I installed KW HAS on my G82 a couple of months ago. I don't experience any loss of performance in handling. I find the ride firmer and less body roll. I also installed camber plates which makes the ride even firmer. I didn't go too low to avoid reducing the damper's travel too much (-15mm front and - 13mm rear), this configuration IMHO just gives a OEM+ look, keeping a good functioning of the oem dampers.
Of course if you are addicted to track days you need a proper coilover, but my oem dampers don't have so many miles on their shoulders and didn't want to discard them too soon. When they will end their life, I will replace with Ohlins R&T or other coilovers.
I mostly use the car on public roads, often for spirited driving, but I see the track only 2 or 3 times per year. So far so good!

[NiccoSab]

Originally Posted by Giak

I installed KW HAS on my G82 a couple of months ago. I don't experience any loss of performance in handling. I find the ride firmer and less body roll. I also installed camber plates which makes the ride even firmer. I didn't go too low to avoid reducing the damper's travel too much (-15mm front and - 13mm rear), this configuration IMHO just gives a OEM+ look, keeping a good functioning of the oem dampers.
Of course if you are addicted to track days you need a proper coilover, but my oem dampers don't have so many miles on their shoulders and didn't want to discard them too soon. When they will end their life, I will replace with Ohlins R&T or other coilovers.
I mostly use the car on public roads, often for spirited driving, but I see the track only 2 or 3 times per year. So far so good!

I’m installing my KW HAS soon for my G82. Looking for the OEM+ look as well and that’s my planned drop. Can you share some pictures?

[TheLender]

I think by reading more 20mm is the safest drop with this might go the BMW HAS KIT to hold the warranty , just sucks what they charge for labour !! The kit itself not to bad

[MrG80]

I had the Eibach pro springs installed in the front which dropped it 20mm with the suspension secrets camber plates.. I was hearing a clicking sound when locking the wheel lock to lock, not sure if it was coming from the camber plates or the springs. I also herd that these spring cause the shock to leak so I decided to take the camber plates and springs out and I’m back to stock height and oem camber. But I’m on the fence now to get either the KW V3 or the MP HAS kit. From what I read BMW reccomends 10mm drop at the front. So if BMW recommends that I think it should be ok even for the shocks… Advantages of the MP HAS kit is that you retain the warranty if any left on the car and you also retain the functionality of the EDC settings in the idrive. With the KW V3’s the EDC will need to be cancelled as they will need to be adjusted by a professional every time you want to change the height,compression and rebound.So at the moment I think I’m kneeling more towards the MP HAS kit but still not quite sure.

[TheLender]

Wow thats good to know , i think the M performance by the sounds of things for me is the way to go, i only track 3-4 time a year and dont have the full tools to start adjusting suspension ect LOL

Keen to hear anyone’s thoughts that are currently running the MP kit or track with it

[Giak]

KW AND MP HAS are very very similar... Both produced by KW. The KW branded offers a wider range of height setting, but if you set both at -10mm I doubt you feel any difference between the two. I don't know if there is any slight difference in spring rate.
Anyway I don't find any reason to spend the triple for the MP. Only warranty could be a reason, but in case of a problem you can always reinstall the oem springs before going to the dealership

[Giak]

Originally Posted by NiccoSab

I’m installing my KW HAS soon for my G82. Looking for the OEM+ look as well and that’s my planned drop. Can you share some pictures?

This is from last night. Sorry the light isn't the best, I shot it in a parking lot.
I have a little bit more than a one finger gap from tire to fender.

[awdboost]

I’m going to respectfully push back on most of the opinions here. For an OEM+ setup, a HAS kit offers real advantages: you get adjustable ride height to lower the center of gravity, the ability to tweak rake for better corner‑entry grip, and the option to fine‑tune corner weights. That combination makes them a more capable solution than fixed lowering springs. As long as you stay within a modest 10–20 mm drop, you avoid the geometry penalties that come from going too low without proper correction.

That said, once you’re talking about a fully track‑focused build, a proper coilover setup is absolutely the right tool for the job. However, my car is 95% street‑driven, and I chose the KW HAS kit over the M Performance setup primarily because of the price point.

[tom @ eas]

Originally Posted by awdboost

I’m going to respectfully push back on most of the opinions here. For an OEM+ setup, a HAS kit offers real advantages: you get adjustable ride height to lower the center of gravity, the ability to tweak rake for better corner‑entry grip, and the option to fine‑tune corner weights. That combination makes them a more capable solution than fixed lowering springs. As long as you stay within a modest 10–20 mm drop, you avoid the geometry penalties that come from going too low without proper correction.

That said, once you’re talking about a fully track‑focused build, a proper coilover setup is absolutely the right tool for the job. However, my car is 95% street‑driven, and I chose the KW HAS kit over the M Performance setup primarily because of the price point.

Pretty spot on. People really shouldn’t be comparing HAS kits to full coilovers, since they’re completely different systems.

If the goal is simply to lower the car and clean up the wheel gap, there’s no reason to drop $5K+ on a motorsport-level coilover. That’s a waste of money when you’re only using a small fraction of what that setup is actually capable of. On the flip side, you can’t expect a HAS kit to completely transform the car’s handling - that’s not what it was designed for. But if your goal is closing the gap and dialing in ride height, it does exactly what it’s supposed to.

[NiccoSab]

I just installed my KW HAS on my G82. Being the fender cut is awful is the general consensus to put the rear to max low?

[Giak]

Originally Posted by NiccoSab

I just installed my KW HAS on my G82. Being the fender cut is awful is the general consensus to put the rear to max low?

I wouldn't recommend that!