[k-m2-j442]

So I haven't take delivery yet but one of the bigger things I did for my supra was putting sway bars on the car. I didn't do any other suspension modifications but it made the car turn in so much nicer and more responsive.

I don't know how good/bad it is on the M2, but I'm surprised to see there are no aftermarket sway bars available as of yet.

That being said if I do go this route, I am not looking forward to the install as dropping the rear subframe and rotating the one out on the supra was not fun.

[Q8_TwinTurbo]

k-m2-j442

To my knowledge, you have 2 options to this day.

Option 1: BMW OEM (G82) M4 CSL sway bars

- Front M4 CSL sway bar p.n. 31-35-8-091-420
- Rear M4 CSL sway bar p.n. 33-50-8-091-429

Option 2: H&R sway bars

- Front H&R sway bar p.n. 70616-2
- Rear H&R sway bar p.n. 71616
- Front & Rear sway bar Kit p.n. 72616-2

[Geighty7]

Originally Posted by k-m2-j442

So I haven't take delivery yet but one of the bigger things I did for my supra was putting sway bars on the car. I didn't do any other suspension modifications but it made the car turn in so much nicer and more responsive.

I don't know how good/bad it is on the M2, but I'm surprised to see there are no aftermarket sway bars available as of yet.

That being said if I do go this route, I am not looking forward to the install as dropping the rear subframe and rotating the one out on the supra was not fun.

Honestly you don’t really need them but to each their own. H&R makes a great solution. There is pretty much 0 tilt in this car when in sport+ chassis.

[DutchBoysRacing]

Does anyone know how much stiffer the CSL sway bar is than factory G87 M2?

Also any one running the H&R kit?

[Sherlock997]

Originally Posted by DutchBoysRacing

Does anyone know how much stiffer the CSL sway bar is than factory G87 M2?

Also any one running the H&R kit?

I have the H&R kit and will post back with my findings once it is installed. It did take a couple of months to come in.

[BroDoze]

How’s the install on the sways on this car? Drop subframe in the front?

[k-m2-j442]

Originally Posted by BroDoze

How’s the install on the sways on this car? Drop subframe in the front?

Disclaimer: I haven’t done it on this car but the Supra…the front was easy, like 25 mins. The back you have to drop the subframe a few inches while supporting with external support and then twist out the old one and twist the new one in. That one took a couple hours to get right (my first attempt at this type of job). I would do it again for the Supra but still up in the air on this car.

[NoDramaG42]

@k-m2-j442

On a side note, how does the stock M2 suspension compare to the stock Supra's?

I also own a MT Supra, and have been thinking about putting a couple bucks into the Suspension / Sway bars.

[k-m2-j442]

Originally Posted by NoDramaG42

@k-m2-j442

On a side note, how does the stock M2 suspension compare to the stock Supra's?

I also own a MT Supra, and have been thinking about putting a couple bucks into the Suspension / Sway bars.

Stock to Stock: I think the M2 wins. I haven't taken it to the track but the turn in on normal back roads and the agility is fantastic. It may not be that much better but it feels more confidence inspiring. Once the sway bars were put on (I didn't do any other suspension, just sway bars, wheels/PS4s) the supra felt very confidence inspiring as well.

My personal feeling is you can't wrong with either. I would have likely gone after a MT supra butttt toyota dealers can kiss my ass. The number I have been to with sleezy sales tactics and such vs the good ones is way to high.

[NoDramaG42]

Originally Posted by k-m2-j442

Stock to Stock: I think the M2 wins. I haven't taken it to the track but the turn in on normal back roads and the agility is fantastic. It may not be that much better but it feels more confidence inspiring.

Wow that's gotta be something despite weighing quite a lot more than the Supra.
At this point, I care more about the agility and feel, rather that out right performance on a track per say.

Makes me want to look into trading my supra or g42 for the M2cs or M2cx whenever its announched, even more

Originally Posted by k-m2-j442

Once the sway bars were put on (I didn't do any other suspension, just sway bars, wheels/PS4s) the supra felt very confidence inspiring as well.

Which brand if you dont mind, and I assume you got both Front and Rears done.

Originally Posted by k-m2-j442

My personal feeling is you can't wrong with either. I would have likely gone after a MT supra butttt toyota dealers can kiss my ass. The number I have been to with sleezy sales tactics and such vs the good ones is way to high.

The toyota dealership / amateur technicians, is a big concern. That's why I havent taken the Supra back to the dealer even for oil changes (first or any).
The MT is a fun car, but imo it feels and wants to be driven in a more old school, less aggressive and more a calm way (for instance it does not like fast or hard shifts) than its AT twin that can take the abuse at all levels.

[k-m2-j442]

Originally Posted by NoDramaG42

Wow that's gotta be something despite weighing quite a lot more than the Supra.
At this point, I care more about the agility and feel, rather that out right performance on a track per say.

I know. I think some of it comes down to the tires too, the stock supra comes with PSS which on the supra you can break lose at 30mph...the PS4S is much better and while they won't hook up perfectly from a dig they are significantly better.

Originally Posted by NoDramaG42

Which brand if you dont mind, and I assume you got both Front and Rears done.

aFe - using the recommended settings. And yes I did front and rear. The rear is a pain in the ass but doable if you have a decent setup to do it at home. I have a quickjack and jack/stands and was able to do it with that without a problem other than the pain of dropping the subframe a bit.

Originally Posted by NoDramaG42

The toyota dealership / amateur technicians, is a big concern. That's why I havent taken the Supra back to the dealer even for oil changes (first or any).
The MT is a fun car, but imo it feels and wants to be driven in a more old school, less aggressive and more a calm way (for instance it does not like fast or hard shifts) than its AT twin that can take the abuse at all levels.

I got my initial oil change done at the toyota but thats it. Its also such a pain in the ass that at least locally the 2 toyota dealers only have 1 "certified supra tech" so you need to schedule it around when they are working. The AT was a ton of fun and honestly with sport mode on, it was great on track, always seemed to be in the right gear (I am not a HPDE expert but it was very capable to me). That being said I love a manual car. I have an AT dd (RDX, which I honestly hate driving, not because its bad but because its not the car type I like driving, smaller, nimble cars are my stuff but family stuff, you know). Regarding the faster shifting and such, I'm probably going to get the rogue SSK and bushing soon, I know that won't fix a lot of the "issues" but at least it'll be more direct and precise. Additionally, I've been driving currently with rev match enabled and once my break in is done, I'll probably disable that more and see how that goes but I hear revhang is pretty bad. Lots of things to look into.

[HP Autosport]

Originally Posted by k-m2-j442

So I haven't take delivery yet but one of the bigger things I did for my supra was putting sway bars on the car. I didn't do any other suspension modifications but it made the car turn in so much nicer and more responsive.

I don't know how good/bad it is on the M2, but I'm surprised to see there are no aftermarket sway bars available as of yet.

That being said if I do go this route, I am not looking forward to the install as dropping the rear subframe and rotating the one out on the supra was not fun.

It's the least expensive upgrade for roll control and reduce camber changes. However, a larger front bar might be beneficial in reducing unwanted camber changes and add some bite in the corners, the opposite is true for the rear bar in terms of traction.

More bar also means more spring rate in corners and will require more damping to control it.

[BroDoze]

I went with just an upgraded thicker bar up front in my old 135i. Made a pretty big diff in the handling. That thing was super roll town stock.

[Lappy]

Originally Posted by HP Autosport

It's the least expensive upgrade for roll control and reduce camber changes. However, a larger front bar might be beneficial in reducing unwanted camber changes and add some bite in the corners, the opposite is true for the rear bar in terms of traction.

More bar also means more spring rate in corners and will require more damping to control it.

Can you help me understand the camber part. The cars ride the bump stops early, even earlier when lowered, yet every lowered car gains static camber.

[HP Autosport]

Originally Posted by Lappy

Can you help me understand the camber part. The cars ride the bump stops early, even earlier when lowered, yet every lowered car gains static camber.

Yes, there is some camber gain as the suspension is compressed, but not nearly enough to combat the roll induced camber changes. A larger bar will help somewhat, but you need much more static camber to start with.

BMW doesn't use the "bump stop" as "bump stops", it's actually a secondary spring to increase the rate of the metal spring. If you are constantly riding on it, your car is too low.

This may be off the topic of this thread. Feel free to PM is necessary.

[Lappy]

Originally Posted by HP Autosport

Yes, there is some camber gain as the suspension is compressed, but not nearly enough to combat the roll induced camber changes. A larger bar will help somewhat, but you need much more static camber to start with.

BMW doesn't use the "bump stop" as "bump stops", it's actually a secondary spring to increase the rate of the metal spring. If you are constantly riding on it, your car is too low.

This may be off the topic of this thread. Feel free to PM is necessary.

The car rides the bump stops stock fairly easily....everyone makes these claims but no one actually takes any measurements and just repeats the same information theard 10 years ago.

[HP Autosport]

Originally Posted by Lappy

The car rides the bump stops stock fairly easily....everyone makes these claims but no one actually takes any measurements and just repeats the same information theard 10 years ago.

It's okay to ride on the progressive bump stops. It just adds to the overall spring rate.

What claims are they making?

[Lappy]

Originally Posted by HP Autosport

It's okay to ride on the progressive bump stops. It just adds to the overall spring rate.

What claims are they making?

Claims that swaybars reduce camber loss when in reality they do no such thing as the car will hit the harder part of the bump stop well before the camber curve plays a roll

[HP Autosport]

Originally Posted by Lappy

Claims that swaybars reduce camber loss when in reality they do no such thing as the car will hit the harder part of the bump stop well before the camber curve plays a roll

They all contribute to it. It's a balancing act and there are many ways to address it.

[Polo08816]

Originally Posted by Lappy

Claims that swaybars reduce camber loss when in reality they do no such thing as the car will hit the harder part of the bump stop well before the camber curve plays a roll

I don't think that's the case unless you have some aftermarket springs that lower the car by some obnoxious amount. I don't think OEMs usually design suspensions to ride on the bump stops while cornering.

[HP Autosport]

Originally Posted by Polo08816

I don't think that's the case unless you have some aftermarket springs that lower the car by some obnoxious amount. I don't think OEMs usually design suspensions to ride on the bump stops while cornering.

BMW use them as secondary springs to add to the spring rate. If they are progressive bump stops, they are used as secondary springs.

[Lappy]

Originally Posted by Polo08816

I don't think that's the case unless you have some aftermarket springs that lower the car by some obnoxious amount. I don't think OEMs usually design suspensions to ride on the bump stops while cornering.

Most modern cars ride bump stops. Like I said no one actually measures anything and just makes assumptions.