Which brake fluid ?

[Clubber]

I use Castrol SRF on all my M cars. More than capable for daily duties and super durable on track days. It is a lot more expensive than others but simply the best.

insanely expensive stuff and theirs plenty on the market thats not even a quarter of the price and performs to the same standards.

You are probably right about the on road performance but for track, SRF has much higher boiling points and whats more important is, it never loses its formula once it nears its boiling limits which can not be said for other "regular " fluids. There is a reason why almost all motorsport teams use Castrol SRF and the price difference between SRF and others is not a deal breaker for me as I want only the best when it comes to brakes.

 

[The Saint]

Can anybody point me to a guide on changing the fluid in an M ?

 

[GuidoK]

Basically the same as any other car?
No special parts in the z4m that require extra care afaik....

 

[The Saint]

Does the clutch need to be bled ?

 

[Beedub]

Does the clutch need to be bled ?

the only time I've ever bled the clutch was when i swapped to a braided clutch line. Never don't it for normal break fluid changes, i guess if somehow the system got drained to low it may need it??

 

[TomK]

I just had this stuff put in whilst putting on the APs. Overkill probably but I've come to the limits of other decent stuff before.
http://www.endless-brake.info/index.php/products/brake-fluid

 

[ga41]

I've used Endless before with my stock brakes and was very happy with it but then I got the BBK and never bothered with it again.

 

[Easty-5]

I use Castrol SRF on all my M cars. More than capable for daily duties and super durable on track days. It is a lot more expensive than others but simply the best.

insanely expensive stuff and theirs plenty on the market thats not even a quarter of the price and performs to the same standards.

I have used pretty much every 'performance' fluid on the market over the years and SRF is by far a lot better than the others, especially on track. I have reached the limits of quite a few fluid on some road trips before. Using SRF fluid is the only time I have ever reached the limits of the pads before the fluid. That's not always a good thing on track though. A soft spongy pedal is far better than suddenly getting a solid pedal with limited braking capability. Cost isn't exactly that much of a biggie considering how much we spend on other things for our cars.