[dizzy619]

How impressive do your brakes need to be? Are you doing some serious track work? If not its not worth it just get the blue 370/345 combo with decent pads

[Busted]

Originally Posted by dizzy619

How impressive do your brakes need to be? Are you doing some serious track work? If not its not worth it just get the blue 370/345 combo with decent pads

Tbh i thought this. Those wheels dont show them off and there's no way a 420d would ever need them......

[TopperXP]

What sizes would be required to upgrade an F30 320i with standard brakes to the blue caliper option , i have 19" 403M wheels , thankyou

[dizzy619]

Originally Posted by TopperXP

What sizes would be required to upgrade an F30 320i with standard brakes to the blue caliper option , i have 19" 403M wheels , thankyou

https://rover.ebay.com/rover/0/0/0?m...2F163822644467
Anything like these..

[R99]

Originally Posted by TopperXP

What sizes would be required to upgrade an F30 320i with standard brakes to the blue caliper option , i have 19" 403M wheels , thankyou

A 20i would have 340mm fronts if equipped with the M Sport brakes from factory.

I have a set of 340mm calipers available for £329 delivered if interested

[IK6SPEED]

The master brake cylinder in the F82 is stronger than in the F3x.

[R99]

Originally Posted by IK6SPEED

The master brake cylinder in the F82 is stronger than in the F3x.

Only if the car didn't come with M Sport brakes from factory...

Otherwise the part numbers are identical.

[IK6SPEED]

Originally Posted by R99

Only if the car didn't come with M Sport brakes from factory...

Otherwise the part numbers are identical.

Might want to double check that. I speak from experience

https://www.realoem.com/bmw/enUS/sho...diagId=34_1966

[R99]

Originally Posted by IK6SPEED

Might want to double check that. I speak from experience

https://www.realoem.com/bmw/enUS/sho...diagId=34_1966

No need to double check it.

The part number you have posted is for cars WITHOUT option S2NHA (M Sport braking system)

F3x cars optioned with WITH S2NHA get part number 34337849878 (that is the LHD part no) which is the same as the ///M master.

[IK6SPEED]

Originally Posted by R99

No need to double check it.

The part number you have posted is for cars WITHOUT option S2NHA (M Sport braking system)

F3x cars optioned with WITH S2NHA get part number 34337849878 (that is the LHD part no) which is the same as the ///M master.

So arrogant you will not even check the link.

And since when are UK BMW's LHD :LOL:

[R99]

Originally Posted by IK6SPEED

So arrogant you will not even check the link.

And since when are UK BMW's LHD :LOL:

I posted LHD part number as reference for you, as I could see you were in the USA.

No arrogance on my end. Simply referring to my experience when looking into the masters for my own project which involved retrofitting F10 M5 calipers to my car.

See below - F31 - 330d optioned with M Sport brakes:

https://bimmercat.com/bmw/en/search/...0d/ECE/34_1966

Part number for the master is the same as ///M cars.

[teaston]

Originally Posted by IK6SPEED

So arrogant you will not even check the link.

But your link is for the 420i, the OP's car is a 420d, smartass!

[IK6SPEED]

Originally Posted by teaston

But your link is for the 420i, the OP's car is a 420d, smartass!

https://www.realoem.com/bmw/enUS/sho...diagId=34_1966

No difference!

*sigh*

[teaston]

Originally Posted by IK6SPEED

https://www.realoem.com/bmw/enUS/sho...diagId=34_1966

No difference!

Look again!

[R99]

Originally Posted by IK6SPEED

https://www.realoem.com/bmw/enUS/sho...diagId=34_1966

No difference!

*sigh*

That link literally shows part number: 34337849879

Which is the same as the ///M master

[IK6SPEED]

Originally Posted by R99

That link literally shows part number: 34337849879

Which is the same as the ///M master

And where does the OP state he has M Sport Brakes on his 2015 F33 420d?

The OP pic doesn’t show that.

The OP states it came with 17” wheels.

Why is he trying to change a F33 Blue Caliper for a F82 Blue Caliper?

The fact still remains that the Master Brake Cylinder in the OP’s car will not sufficiently power the F82 Brakes, which is what I originally stated.

[R99]

Originally Posted by IK6SPEED

And where does the OP state he has M Sport Brakes on his 2015 F33 420d?

The OP pic doesn’t show that.

The OP states it came with 17” wheels.

Why is he trying to change a F33 Blue Caliper for a F82 Blue Caliper?

The fact still remains that the Master Brake Cylinder in the OP’s car will not sufficiently power the F82 Brakes, which is what I originally stated.

I never said that the OP had M Sport brakes?

It was you that stated:

"The master brake cylinder in the F82 is stronger than in the F3x."

This is not true, as evidenced by the links on the thread, where many cars optioned with M Sport brakes from factory share the same master.

However, it would seem (from looking further since this discussion) that some of the lower powered petrol models do indeed not have the ///M master even when optioned with the ///M brakes. However, this is further proof that the M brakes are compatible with either master!!

I also assume you are aware that BMW sell the M Performance brakes for the F3x range? These are the 370/380 4 pots and 345 2 pots, identical to the ///M calipers.

This retrofit kit does not include a master cylinder upgrade from BMW....

[IK6SPEED]

Originally Posted by R99

I never said that the OP had M Sport brakes?

It was you that stated:

"The master brake cylinder in the F82 is stronger than in the F3x."

This is not true, as evidenced by the links on the thread, where many cars optioned with M Sport brakes from factory share the same master.

However, it would seem (from looking further since this discussion) that some of the lower powered petrol models do indeed not have the ///M master even when optioned with the ///M brakes. However, this is further proof that the M brakes are compatible with either master!!

I also assume you are aware that BMW sell the M Performance brakes for the F3x range? These are the 370/380 4 pots and 345 2 pots, identical to the ///M calipers.

This retrofit kit does not include a master cylinder upgrade from BMW....

The subject of thread was an OP asking a question.

I gave the correct information for his retrofit he needed to know, no matter how you try to justify your response.

I did not have MSport Brakes on my 2013 and upon retrofit, the brakes have severe fade as the Master Cylinder does not have the power needed. This was corrected by retrofitting the Master Brake Cylinder and Brake Servo Unit from a F8x vehicle.

Real first hand experience.

[dizzy619]

Originally Posted by IK6SPEED

The subject of thread was an OP asking a question.

I gave the correct information for his retrofit he needed to know, no matter how you try to justify your response.

I did not have MSport Brakes on my 2013 and upon retrofit, the brakes have severe fade as the Master Cylinder does not have the power needed. This was corrected by retrofitting the Master Brake Cylinder and Brake Servo Unit from a F8x vehicle.

Real first hand experience.

Maybe you just had a duff master cylinder.. I run the 370/380mm calipers on my 2007 1 Series coupe track car it definitely doesn't have an f80 master cylinder.. Works great... 1st hand experience....

[teaston]

Originally Posted by dizzy619

Maybe you just had a duff master cylinder.. I run the 370/380mm calipers on my 2007 1 Series coupe track car it definitely doesn't have an f80 master cylinder.. Works great... 1st hand experience....

That is a smaller lighter car though, wonder if that's reason that 320i's with M Sport brakes doesn't get the F80 master cylinder.

[Wills2]

Don't BMW do an M performance upgrade for the normal 3 series with slotted disks and red calipers, I'd just get that rather than faffing around trying to make things fit that aren't meant to.

[R99]

Originally Posted by Wills2

Don't BMW do an M performance upgrade for the normal 3 series with slotted disks and red calipers, I'd just get that rather than faffing around trying to make things fit that aren't meant to.

They do - and you can also choose orange or yellow.

Surprisingly..... it doesn’t include a master cylinder upgrade....