[T-Rexx]

Ok, so first, apologies in advance because I know this would have been talked to death already.

However, I have missed that conversation so I need to ask our informed M2 owners again.

My M2 arrives in late December and of course I need to fix the ride height

Can anyone please help or advise how I can measure spring performance so I can pick the spring that will accomplish what I want to achieve.

My goals are:
1. Solid springs (not HAS) mainly for cost / value reasons as I don’t need any adjustability or want to ‘slam’ the car super low.
2. Conservative drop, nothing too crazy but maybe a 20mm drop for the OEM+ look and also to not cringe averytime I approach a speed bump.
3. Increase handeling performance. If I am going to change the spings for appearance I may as well make it count for performance as well.

Does such a spring exists?
If your not sure, how can I research? Should I be looking for a higher or lower spring rate than factory?

[Mike_H_]

Originally Posted by T-Rexx

2. Conservative drop, nothing too crazy but maybe a 20mm drop for the OEM+ look and also to not cringe everytime I approach a speed bump.

These lower 1" https://www.ecstuning.com/b-ecs-part....BMW.Catch_All

Good luck in your search. You will need an oil cooler skid plate because the oil cooler is as exposed as lady Godiva.

I have an M240ix with ZTK and put a small hole in my oil cooler. Oil on my driveway led me to discover it with only 2 quarts lost, so no engine damage.

However, a G87 owner and member picked up their car on the East Coast, was driving it back to the Midwest, got a low oil warning, pulled over and their engine was toast. The insurance company declared it a total loss.

Turned out, something small had kicked up off the road and put a pretty small hole in the oil cooler, it was their 1st day owning the car.

Mine was from rebar from a parking block that scraped the cooler when I was distracted.

I bought the Turner Motorsports skid plate, which is very thick hardened aluminum, Mishimoto has one too.

I know this is off topic, but it's related.

[Bumpinjeep]

The perfect spring would be some time late May, not too hot and not cold either. Warm but with the recent rainfall, the grass is green and lush. And you know that summer is right around the corner so that always gets you excited too.

In terms of what you're looking for

Originally Posted by T-Rexx

1. Solid springs (not HAS) mainly for cost / value reasons as I don’t need any adjustability or want to ‘slam’ the car super low.
2. Conservative drop, nothing too crazy but maybe a 20mm drop for the OEM+ look and also to not cringe averytime I approach a speed bump.
3. Increase handeling performance. If I am going to change the spings for appearance I may as well make it count for performance as well.

KW HAS solves everything.
1. HAS is around $1K, it's cheap for a high end product. KW is a great company known for their work in Motorsport. You don't have to slam the car either, you can simply lower it slightly and have a less roll in corners.
2. Again, you can simply lower it by 20mm if you want and not cringe every time you approach a speed bump.
3. The car will handle better on street and track with the KW system. It's designed for this particular chassis.
You're buying a $70K plus car. Don't save a penny and lose a dollar with shit springs, just not worth it to ruin your car.

[sebaflex]

I think Eibach Pro-Kit is perfect for what you described.

Anyways, heres a link to the Non-Adjustable Springs Thread to help you out on your decision.

[T-Rexx]

Originally Posted by Mike_H_

These lower 1" https://www.ecstuning.com/b-ecs-parts/g87-m2-lowering-springs/031758la01~a/?msclkid=871ba759a216141736bdc1829b4eb045&utm_sour ce=bing&utm_medium=cpc&utm_campaign=Srch.Shopping. BMW&utm_term=4579465934639648&utm_content=Shopping .BMW.Catch_All

Good luck in your search. You will need an oil cooler skid plate because the oil cooler is as exposed as lady Godiva.

I have an M240ix with ZTK and put a small hole in my oil cooler. Oil on my driveway led me to discover it with only 2 quarts lost, so no engine damage.

However, a G87 owner and member picked up their car on the East Coast, was driving it back to the Midwest, got a low oil warning, pulled over and their engine was toast. The insurance company declared it a total loss.

Turned out, something small had kicked up off the road and put a pretty small hole in the oil cooler, it was their 1st day owning the car.

Mine was from rebar from a parking block that scraped the cooler when I was distracted.

I bought the Turner Motorsports skid plate, which is very thick hardened aluminum, Mishimoto has one too.

I know this is off topic, but it's related.

Hahahaha “as exposed as lady Godiva” hahaha. But yes I have moshimo plate on order.

Thanks mate, I will check out the ecs link.
The drop is perfect buts what’s the spring quality like? Is it like stock or better sport performance to stock?

[T-Rexx]

Originally Posted by Bumpinjeep

The perfect spring would be some time late May, not too hot and not cold either. Warm but with the recent rainfall, the grass is green and lush. And you know that summer is right around the corner so that always gets you excited too.

In terms of what you're looking for



KW HAS solves everything.
1. HAS is around $1K, it's cheap for a high end product. KW is a great company known for their work in Motorsport. You don't have to slam the car either, you can simply lower it slightly and have a less roll in corners.
2. Again, you can simply lower it by 20mm if you want and not cringe every time you approach a speed bump.
3. The car will handle better on street and track with the KW system. It's designed for this particular chassis.
You're buying a $70K plus car. Don't save a penny and lose a dollar with shit springs, just not worth it to ruin your car.

Hahahaha that does sound like the ideal spring! Well played sir! Hahahaha.

As far as the KW HAS, you make a solid case!
I will check out the price differences. I know springs are around $700 AUD, so if the KW HAS can be found for around $1500 AUD, I see your point and will propbly get those

[T-Rexx]

Originally Posted by sebaflex

I think Eibach Pro-Kit is perfect for what you described.

Anyways, heres a link to the Non-Adjustable Springs Thread to help you out on your decision.

Thanks mate, I will check it out

[T-Rexx]

So I just realised I have posted this thread in the wrong forum. Sorry I am a newbie.

I meant to post it under wheels, brakes and suspension.

Does anyone know how/if I can move it over there?

[ourlee]

I’m a bit dissapointed. I thought YOU discovered the perfect spring

[T-Rexx]

Originally Posted by ourlee

I’m a bit dissapointed. I thought YOU discovered the perfect spring

Hahahaha sorry mate, didn’t mean to get your hopes up!

[ourlee]

It was funny. Perfect springs $500? HAS $3000
I was excited.

[Dave07997S]

Originally Posted by sebaflex

I think Eibach Pro-Kit is perfect for what you described.

Anyways, heres a link to the Non-Adjustable Springs Thread to help you out on your decision.

Agreed

[T-Rexx]

Originally Posted by Dave07997S

Agreed

That drop is perfect!!!!!
Nicely tucked up in the wheel arch, but still an inch or so wheel gap. Chef kiss!

What is the spring rate? Stuffer than stock?
Hopping also improve handeling / corner roll as well as appearance?

[T-Rexx]

Originally Posted by ourlee

It was funny. Perfect springs $500? HAS $3000
I was excited.

Exactly my dilemma as well.

[Dave07997S]

Originally Posted by T-Rexx

That drop is perfect!!!!!
Nicely tucked up in the wheel arch, but still an inch or so wheel gap. Chef kiss!

What is the spring rate? Stuffer than stock?
Hopping also improve handeling / corner roll as well as appearance?

The Eibach Pro Kit is meant to be used with the OEM struts/shocks. So the spring rate is only 10% stiffer than OEM. Eibach doesn't release spring rates as it is proprietary. Also,with OEM struts/shocks you don't want to lower the car too much as you go beyond the valving range of the units. I found the M2 to be a beast in the handling department the way it is OEM. A car that car run in the mid 7:30s with just some Mich PSC2s at the Ring has to be good in that department.

One thing I will say, is after lowering the car I got -2.0 deg negative camber in the front and almost the same rear. That has to help.

[T-Rexx]

Originally Posted by Dave07997S

The Eibach Pro Kit is meant to be used with the OEM struts/shocks. So the spring rage is only 10% stiffer than OEM. Eibach doesn't release spring rates as it is proprietary. Also,with OEM struts/shocks you don't want to lower the car too much as you go beyond the valving range of the units. I found the M2 to be a beast in the handling department the way it is OEM. A car that car run in the mid 7:30s with just some Mich PSC2s at the Ring has to be good in that department.

One thing I will say, is after lowering the car I got -2.0 deg negative camber in the front and almost the same rear. That has to help.

Thank you mate, that is very helpful!
Exactly what I am looking for with it being a mild drop and for the spring to be slightly stiffer to prevent the strut/shock to bottom out now that it has less travel due to the shorter spring.

[Dave07997S]

Originally Posted by T-Rexx

Thank you mate, that is very helpful!
Exactly what I am looking for with it being a mild drop and for the spring to be slightly stiffer to prevent the strut/shock to bottom out now that it has less travel due to the shorter spring.

Keep in mind that the European Part number (I don't know what you Aussies will get) Eibach drops the car more. You can order from a US provider if you want the US's more conservative drop. Mine is a US part #.

[BroDoze]

My Eibach Pros includes instructions to cut the stock bumpstops F+R.

[chris719]

Originally Posted by T-Rexx

Ok, so first, apologies in advance because I know this would have been talked to death already.

However, I have missed that conversation so I need to ask our informed M2 owners again.

My M2 arrives in late December and of course I need to fix the ride height

Can anyone please help or advise how I can measure spring performance so I can pick the spring that will accomplish what I want to achieve.

My goals are:
1. Solid springs (not HAS) mainly for cost / value reasons as I don’t need any adjustability or want to ‘slam’ the car super low.
2. Conservative drop, nothing too crazy but maybe a 20mm drop for the OEM+ look and also to not cringe averytime I approach a speed bump.
3. Increase handeling performance. If I am going to change the spings for appearance I may as well make it count for performance as well.

Does such a spring exists?
If your not sure, how can I research? Should I be looking for a higher or lower spring rate than factory?

You can't get all 3 without full coilovers. Even HAS degrades ride quality and takes away non-bump travel. Anyone saying otherwise is simply wrong. You might be able to get close or acceptable, though.

[T-Rexx]

Originally Posted by Dave07997S

Keep in mind that the European Part number (I don't know what you Aussies will get) Eibach drops the car more. You can order from a US provider if you want the US's more conservative drop. Mine is a US part #.

Good to know mate!
I like your drop so it’s U.S spec for me.
I don’t suppose you would know the U.S part number?

[T-Rexx]

Originally Posted by BroDoze

My Eibach Pros includes instructions to cut the stock bumpstops F+R.

Ok cool, and that would stop the potential for the shock to bottom out?

[BroDoze]

Originally Posted by T-Rexx

Ok cool, and that would stop the potential for the shock to bottom out?

To allow additional (lower) travel. The car would be slamming the bump stocks on bumps if they weren’t cut. Pretty typical for a lowering spring swap. There is less “room” to soak up big hits though. I bought the Eibach Pro kit, but I’m not 100% sure they’re going on the car. The gap is bad stock, but the roads here are worse. I wish there was a quality 10mm lowering spring option instead of the 20-25mm lowering springs.