Front brake kit questions

[Envain]

I'm curious about the options below to see if they are a direct drop-in or if there are any issues with fitting a 370 on the front.


I was looking at the M Sport Blue, which I believe fits max 348mm x 30mm
While the M performance below supports 370x30
Probably going to go used either way.

I want brake balance, so improvements to the OEM rear would be needed. But I also want it to look good and fill out. 18" APEX SM-10 wheels

Caliper - BMW (34-11-7-852-120)
https://parts.bmwofsouthatlanta.com/oem ... 4117852120
Caliper - BMW (34-11-7-852-119)
https://parts.bmwofsouthatlanta.com/oem ... 4117852119


I understand there's also the below, which supports the 370mm. Wondering what most would recommend
4 piston caliper 34106855475/6
Assuming this would also work?(also on rock auto which I would go with) https://www.ebay.com/itm/126336763906

[B21]

Covered in detail what fits etc

https://e89.zpost.com/forums/showthread.php?t=1096917


You won’t need to change the rears if you are using 370mm with F30 calipers

Well within acceptable limits

[Envain]

Thanks, Any idea if the black ones work? looks to be unbranded bmw brembo at a much better price than what i can find.

[B21]

The cheapest way is to buy pattern 340mm calipers ..not the factory 370/380 calipers..then buy a 380mm caliper bracket adapter from eBay or other sources and use M2/M4 disks..

Subject to pressing out the captive ‘nuts’ in the calipers with the fresh ones supplied with the adapter bracket it’s the cheapest and easiest solution by far..

In Europe Ridex/ ABS amongst others supply pattern parts..

The 340 and 370/380 caliper pad is identical..

Obviously a change in pad compound such as Ferodo DS2500 will add more bite..then the same pad on the rear would help balance it out..

I do see 345 and 370 rear kits with M5 / F series 5 calipers for more grip / bite / endurance .

https://www.dropbox.com/scl/fi/qscymxyp ... guxas&dl=0

[Envain]

The cheapest way is to buy pattern 340mm calipers ..not the factory 370/380 calipers..then buy a 380mm caliper bracket adapter from eBay or other sources and use M2/M4 disks..

Subject to pressing out the captive ‘nuts’ in the calipers with the fresh ones supplied with the adapter bracket it’s the cheapest and easiest solution by far..

In Europe Ridex/ ABS amongst others supply pattern parts..

The 340 and 370/380 caliper pad is identical..

Obviously a change in pad compound such as Ferodo DS2500 will add more bite..then the same pad on the rear would help balance it out..

I do see 345 and 370 rear kits with M5 / F series 5 calipers for more grip / bite / endurance .

https://www.dropbox.com/scl/fi/qscymxyp ... guxas&dl=0

Is this the rear adapter needed https://www.seemslegitgarage.com/produc ... -brake-kit, this is what a friend suggested to had a build thread on the 1 series fourm.

And to clairfy (im dense) The blue M sport (mbadge) 340mm calipers is what youre referring to?

Awesome rear writeup. You sell your kit somewhere?

[B21]

Yup that looks like a version of the same idea…so any 340mm F type BMW or copy should work..

My kits will go on sale later in July or August..just finalising pricing / package options

More complex sadly than the fronts

[Envain]

Yup that looks like a version of the same idea…so any 340mm F type BMW or copy should work..

My kits will go on sale later in July or August..just finalising pricing / package options

More complex sadly than the fronts

Thanks, pulled the trigger on the Blue M Sports. Easier to swallow buying bit by bit spaced out

Awesome, I'll keep my eyes peeled for when you release them.

[Envain]

It appears that these brackets specifically state 380 and indicate that they don't support 370.

Where have you guys sourced other adapter plates from?