Think you may be a customer your dealer would luv to lose if you go in with that attitude. Just buy something else if it bothers you that much.
But yes Bmw do need to fix whatever the issue is once and for all.
Brembos now fitted to new models ?
- Thread starter bobsnew
- Start date
Think you may be a customer your dealer would luv to lose if you go in with that attitude. Just buy something else if it bothers you that much.
But yes Bmw do need to fix whatever the issue is once and for all.
Njw1967
Registered user
I am a automation engineer, we test everything to failure point then fix the problems.
I have had a BMW M4 from new in 2016 no problem
Im not a moaner just want what I’ve paid for !!!
And based on current statistics,
I did not pay for leaky callipers..
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I have had a BMW M4 from new in 2016 no problem
Im not a moaner just want what I’ve paid for !!!
And based on current statistics,
I did not pay for leaky callipers..
Sent from my iPhone using Tapatalk
One pair of leaking calipers on one bike out of a production batch in a no no ,but it can occur .
Numerous sets (some fitted to the same bikes ) and from production runs possibly a year apart and therefore from different batches of supplied calipers by the same manufacturers (Hayes ) are an absolute f*cking disgrace.
BMW have promised owners that it was a bad batch but it has been rectified which it obviously has not , Just in Time Manufacturing will mean that neither BMW nor Hayes will have months worth of calipers sitting in stock.
I don't give a flying f*ck that BMW have an excellent warranty system , this is a safety related issue as no vehicle on the road should have a brake fluid seepage , leakage issue or whatever you want to call it . A ten year old vehicle would fail it's MOT for a brake fluid leak , never mind a vehicle just off the production line .
I didn't change my 1200 for a 1250 this year because of this and other known issues and having been a BMW Beta tester in the past I would not care to go through that sh*t again.
Personally if I was picking up a new bike and it had from new or as in many cases quickly developed a brake fluid leak from defective calipers I would reject it on safety reasons , good leverage for them swapping to Brembo calipers or supplying you with a replacement vehicle from a new production batch fitted with them at the factory
Numerous sets (some fitted to the same bikes ) and from production runs possibly a year apart and therefore from different batches of supplied calipers by the same manufacturers (Hayes ) are an absolute f*cking disgrace.
BMW have promised owners that it was a bad batch but it has been rectified which it obviously has not , Just in Time Manufacturing will mean that neither BMW nor Hayes will have months worth of calipers sitting in stock.
I don't give a flying f*ck that BMW have an excellent warranty system , this is a safety related issue as no vehicle on the road should have a brake fluid seepage , leakage issue or whatever you want to call it . A ten year old vehicle would fail it's MOT for a brake fluid leak , never mind a vehicle just off the production line .
I didn't change my 1200 for a 1250 this year because of this and other known issues and having been a BMW Beta tester in the past I would not care to go through that sh*t again.
Personally if I was picking up a new bike and it had from new or as in many cases quickly developed a brake fluid leak from defective calipers I would reject it on safety reasons , good leverage for them swapping to Brembo calipers or supplying you with a replacement vehicle from a new production batch fitted with them at the factory
Ok just cancel the order and buy a fucking KTM then ffs.
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You do realise that ‘automation’ is not the same as ‘automotive’ ? Sure you are an actual ‘engineer’?
Plenty of folk have no issues with the Hayes calipers and some seem to find them better than the Brembos fitted previously.
Njw1967
Registered user
Yes I make machines work.....
Mechatronics mechanical and electronics..........
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Mechatronics mechanical and electronics..........
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Njw1967
Registered user
And that was after my apprenticeship as a BMW master technician
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Booked my 1250 Exclusive in for it's 600 mile first service. Was told the callipers were leaking and needed new pistons and seals.
I mentioned to it was sluggish sometimes turning over when hot apparently a couple of weeks ago BMW advised any turning over issues replace battery with the 1200 one same size etc just got more umph.
I don't particularly like the Hayes calipers just don't feel as progressive when braking had no issues with the brembos on all my previous GS's
I mentioned to it was sluggish sometimes turning over when hot apparently a couple of weeks ago BMW advised any turning over issues replace battery with the 1200 one same size etc just got more umph.
I don't particularly like the Hayes calipers just don't feel as progressive when braking had no issues with the brembos on all my previous GS's
Mmmm i get the exact opposite feeling from them. Far superior than the Brembo offering. And yes i had a Hex twin cam GSA so i know what the Brembo’s felt like. Maybe it was because they were leaking that they didn’t feel right. If fluid can escape its replaced by air.
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Njw1967
Registered user
Not only air brake fluid is extremely hygroscopic so it will be absorbing
moisture as well, this then boils when heat is generated and the rest is science
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moisture as well, this then boils when heat is generated and the rest is science
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Not only air brake fluid is extremely hygroscopic so it will be absorbing
moisture as well, this then boils when heat is generated and the rest is science
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You seem to be only partially literate.. unusual for an ‘engineer’ of your estimation......
What happens to the boiled water when the brake lever is pulled?
Not only air brake fluid is extremely hygroscopic so it will be absorbing
moisture as well, this then boils when heat is generated and the rest is science
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I know this, however my calipers don’t as yet leak.
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Njw1967
Registered user
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I doubt a brake fluid leak would go untouched or unseen for long enough for hygroscopic absorption to take real effect. Even race fluid which is vastly more hygroscopic than oem stuff takes a while. Bear in mind that there is air in the m/c res in constant contact with the fluid.
Of course, it could just be that Hayes have run out of calipers so BMW have bought M4's from Brembo to keep the production line running 
Oh No there's not. A diaphragm keeps the two separate.
Wrong . Most if not all have at least 1 air hole in them to allow air to escape as you insert it. Otherwise it would trap air below it as you push it into the res.
+1 and if this is the acceptable standard for the safety equipment, just think what the rest of the bits are like! but we know this already with all the other faults they suffer! we pay way over the odds for these things, and BMW just keep on taking the piss out of us reducing the quality lower and lower!
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