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E39 M5 (1998-2003)

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  #26  
Old 11-13-2011, 05:10 PM
captain haddock captain haddock is offline
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agree...spongy brakes

Yes, seems that way. By the way, I notice a spongy brake feel. The board has a number of reports of the same phenomenon. I wonder if it is just a feature of the car or if something is actually wrong. The brakes feel very light and well spongy.

I just got it back from the dealer along with a list of all the things wrong with the car and there was no mention of brakes so I don;t know what is wrong, if anything.

Any thoughts?
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  #27  
Old 11-16-2011, 09:10 AM
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mark_m5 mark_m5 is offline
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The thread that never dies!

Ah, ye olde maitenance discussion...

Quote:
Originally Posted by captain haddock View Post
Yes, seems that way. By the way, I notice a spongy brake feel. The board has a number of reports of the same phenomenon. I wonder if it is just a feature of the car or if something is actually wrong. The brakes feel very light and well spongy.

I just got it back from the dealer along with a list of all the things wrong with the car and there was no mention of brakes so I don;t know what is wrong, if anything.

Any thoughts?
I don't have this problem. Maybe have a decent INDEPENDENT mechanic that specializes in BMW take a look at the Brake Master Cylinder, and maybe bleed the brakes. I don't have this issue at all. You're describing my wife's Audi to a T. "Spongy" is the feel there, especially after driving my beast.

My M5 is my daily driver, and I'm at 107K miles now, and the repair bills are less than comparable Ford-made sh!t we've had the displeasure of owning. I baby the car 90% of the time, yes, because I like to see my gas mileage above 18mpg. But that other 10%...

As far as tires, I don't get Michelin PS2's. I tried race compound once and loved it, but they tend to last less than a year. Even at "normal" tire prices, R-comps cost much more because they need to be replaced more often. FYI, my wife's Audi Allroad cost just as much to re-shoe with OEM Dunlops as my M5 did with Nitto Invo's.

As far as leaking power steering lines? My INDEPENDENT mechanic, that I found when the Dealer/$tealer told me I needed to spend $400 to replace them on my 540 sport (before I had the M), showed me that they were leaking because of the (tension) clamps that BMW installs stock. New (screw) clamps for $5 fixed the leaks.
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  #28  
Old 12-05-2011, 08:39 PM
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RSPDiver RSPDiver is offline
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I don't know if "spongy" is what I note. Once they grab, they grab. But the brake pedal travel is much deeper than my 330i (ZHP). I've grown accustomed (from driving the ZHP for 7 years) to splitting my foot over the brake and accelerator, in what would be a heel-toe for me. Maybe not optimal, but I am used to it and do it quite well. Doesn't work the same in the M5, as the brake lever goes below the accelerator pedal level, so I find that I'm revving unintentionally at times. I would love to make my M5 brake pedal react like the ZHP, but I don't believe bleeding is the solution.

Not sure if that's what you notice, but thought I'd offer my perspective.
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  #29  
Old 12-14-2011, 02:22 AM
Akeme Akeme is offline
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I have a 2002 M5, i recently had my my big end bearings replaced as preventative maintenance - the failure rate is becoming higher, the BMW M Specialist i used told me out of 50 e39 m5's he works on, 10 have had rod bearing failure in the last year, mileage and oil used seem irrelevant, although there is some suggestion that the rev limit is to high from factory. My car has done 81,000 miles, and he said the bearing on cyl 7 was showing some early signs of wear creating a very light noise at 2500-3000rpm.

The spongy brake feel can be cured with braided brake hoses at the front, the factory hoses are very long which contributes to the lack of brake feel.
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  #30  
Old 12-15-2011, 06:29 PM
z28forlife z28forlife is offline
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Quote:
Originally Posted by Akeme View Post
I have a 2002 M5, i recently had my my big end bearings replaced as preventative maintenance - the failure rate is becoming higher, the BMW M Specialist i used told me out of 50 e39 m5's he works on, 10 have had rod bearing failure in the last year, mileage and oil used seem irrelevant, although there is some suggestion that the rev limit is to high from factory. My car has done 81,000 miles, and he said the bearing on cyl 7 was showing some early signs of wear creating a very light noise at 2500-3000rpm.

The spongy brake feel can be cured with braided brake hoses at the front, the factory hoses are very long which contributes to the lack of brake feel.

How much was it to get those rod bearings replaced?I if you don't mind me asking?
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  #31  
Old 12-16-2011, 12:09 AM
Akeme Akeme is offline
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It cost 1400 here in the UK for all 16 rod bearings and new bolts, sump gaskets and 10w60 oil change.
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  #32  
Old 01-12-2012, 10:59 PM
Stuka Stuka is offline
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Quote:
Originally Posted by mark_m5 View Post
Ah, ye olde maitenance discussion...



I don't have this problem. Maybe have a decent INDEPENDENT mechanic that specializes in BMW take a look at the Brake Master Cylinder, and maybe bleed the brakes. I don't have this issue at all. You're describing my wife's Audi to a T. "Spongy" is the feel there, especially after driving my beast.
My ex-indie mechanic was a BMW master tech and has worked on BMW for IIRC, close to 20 years.

He ended up being the one who screwed up and gave me random SES lights.

How? because he thought he was so good that he didn't need to follow the ETK when replacing the water pump which I had him do as a preventive maintenance. So, what happens when you don't follow the ETK to the letter when replacing the water pump? Oh that's right, you screw up the harmonic balancer and get these unexplained and simple "misfire" codes that I actually found a competent dealer who tracked it down and fixed it.

Yes I had to pay dealer price. But you know what? It was really maybe 25% more than his total price, I got a E90 loaner (he had no loaners) for the entire duration of this T/S exercise, which took more than a week (plugs, coils, fuel rails, injectors, etc, and etc), and stuff was fixed right.
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  #33  
Old 01-13-2012, 09:14 AM
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mark_m5 mark_m5 is offline
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Quote:
Originally Posted by Stuka View Post
My ex-indie mechanic was a BMW master tech and has worked on BMW for IIRC, close to 20 years.

He ended up being the one who screwed up and gave me random SES lights.

How? because he thought he was so good that he didn't need to follow the ETK when replacing the water pump which I had him do as a preventive maintenance.
I did say "decent" independent.

I'd want to avoid your ex-independent mechanic for sure.

My indie replaced a water pump on my Z3 M Roadster and it's not throwing codes, so I guess that means he's "decent".
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  #34  
Old 01-13-2012, 09:36 AM
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  #35  
Old 08-07-2012, 10:58 AM
EightysixdM5 EightysixdM5 is offline
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Mein Auto: 2000 E39 M5
I was worried about the cost also. I build lots of hot rod bikes, snowmobiles, and diesel trucks, with my buisness and know HP costs money. Growing up I always heard how hard Euro cars are to work on and etc.. The M5 does go threw some parts with all the HP she lays down, but its so easy to work on and you can do most repairs yourself. Plus I've found so many helpful tech tips and people on this forum to help out, or at least keep things in check with what it should cost. Buy the M5 it is a amazing car and pretty bullet proof.
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