SPL parts, refresh bushes kit or new oem control arms ?

Hello guys
I just bought a 2009 DCT m3 and I’m new to this platform and seeking your support and advice 🙏🏼🙏🏼 I’m planning to use the car on street sometimes and track it on weekends.

I did a lot of search in this forum and the first thing i did was replacing the rod bearings and changing all the car’s fluid.

I ordered AP racing front brakes and Nitron R3 suspension and it’s expected to arrive within a month from now.

Now I’m looking to refresh the control arms and tie rods. My question is do i need to upgrade to spl parts ? If yes, is all parts are necessary or should I refresh the bushings only?
If only refreshing the bushes, which bushes recommended to be solid and which one is recommended to be soft?

Keeping in mind I don’t want the car to be harsh or stiff on street 🙏🏼🙏🏼

I think that depends on how serious of a track car you want it to be. The spl control arms will allow more camber. Another options which could be better for a dual purpose car is to get the German auto solutions monoballs that come with the control arm if the car is in need of a suspension refresh. I think one thing everyone will agree on is solid subframe bushings and maybe a powerflex diff bushing

Here's another option:

https://www.m3post.com/forums/showthread.php?t=1781245

If your car is street driven you may find that sealed bearings will last a lot longer and are less noisy than race arms with open spherical joints.

nycplumber wrote

I think that depends on how serious of a track car you want it to be. The spl control arms will allow more camber. Another options which could be better for a dual purpose car is to get the German auto solutions monoballs that come with the control arm if the car is in need of a suspension refresh. I think one thing everyone will agree on is solid subframe bushings and maybe a powerflex diff bushing

Thanks a lot 🙏🏼 I think i will go with the solid subframe bushings 👍🏼 also i have the millway diff bushings but it’s not installed yet.

Redd wrote

Here's another option:

https://www.m3post.com/forums/showthread.php?t=1781245

If your car is street driven you may find that sealed bearings will last a lot longer and are less noisy than race arms with open spherical joints.

Thanks a lot 🙏🏼 amazing thread i should spend sometime reading it 👌🏼👌🏼