[isanube]

Hey, I recently ordered a set of H&R M550i springs for my F90 and I'm having a hard time figuring out what spacer spec I should get? I currently have the 706M Black wheels. I was hoping to get as far out as possible without rubbing (I track the car a few times out of the year as well if that means anything) TIA

[Vic55]

I have a full thread where I swapped to the M550i springs and have 15F/12R spacers with no rubbing issues:

https://f90.bimmerpost.com/forums/sh....php?t=1644768

[dardeca]

Originally Posted by isanube

Hey, I recently ordered a set of H&R M550i springs for my F90 and I'm having a hard time figuring out what spacer spec I should get? I currently have the 706M Black wheels. I was hoping to get as far out as possible without rubbing (I track the car a few times out of the year as well if that means anything) TIA

One thing to consider with aftermarket springs, is the spring rate relative to the stock springs. BMW doesn't post the spring rate on their cars, and I don't believe H&R does either. I have the F90 H&R sport springs, but I don't track my car.

Need to be careful with hard left to right transitions on the track that the springs won't bottom out and do damage to the suspension as a whole.

[limeypride]

Originally Posted by isanube

Hey, I recently ordered a set of H&R M550i springs for my F90 and I'm having a hard time figuring out what spacer spec I should get? I currently have the 706M Black wheels. I was hoping to get as far out as possible without rubbing (I track the car a few times out of the year as well if that means anything) TIA

I went with 13mm front, 10mm rear. After simultaneously upgrading suspension and tires, I experienced rubbing on the rear. Now as much as I like to have my rear rubbed (it was there, so I took it), it's obviously not sustainable so I took the rear spacers off completely. With stock tires, this looks wrong to my eye but with 295s on the rear, it matches the front (with 13mm spacers + 285s).

[r33_RGSport]

15/11 or 15/12 has been the popular setup with stock wheels and tire sizes.

PM me if you are interested for a quote.

[windtendo]

Originally Posted by limeypride

I went with 13mm front, 10mm rear. After simultaneously upgrading suspension and tires, I experienced rubbing on the rear. Now as much as I like to have my rear rubbed (it was there, so I took it), it's obviously not sustainable so I took the rear spacers off completely. With stock tires, this looks wrong to my eye but with 295s on the rear, it matches the front (with 13mm spacers + 285s).

Yup. I've got 10mm up front and nothing on the rear. It pulls the front out to match the back. I'm happy with the way it looks, and it's not going to take away any of the driveability. The 15f/12r setup looks really good when it's lowered, but it's just a tinge too aggressive for me to daily.