Last post on May 18, 2013 at 8:35 AM
You are in the BMW Z4
What is this discussion about?
BMW Z4, Convertible
#240 of 255 Re: Z4 2004 - Leak from Top into Trunk - Burned Receiver and Motor for Conv Top [lduggan]
Aug 29, 2011 (6:16 pm)
mokkbo - I had the same set of problems with my 2003 Z4, and had to replace the amp twice, and the battery at least once while the local BMW dealer fiddled with water in the trunk. Various remedies were performed - replacing the rear tail light, cleaning out the drain - but the problem wasn't solved until the roof was replaced(!). After incurring several thousand dollars in costs (the amps alone were over $1000 each), they did the roof for free.
That was about three years ago. My concern is that I recently found water in the well again. In posts on other blogs, I've found other Z4 owners with the same problem. Sounds like a design flaw to me. Time for a class action suit?
Let me know if your situation has been resolved, and if so, how.
#241 of 255 Re: Z4 2004 - Leak from Top into Trunk - Burned Receiver and Motor for Conv Top [bod2]
Sep 09, 2011 (7:07 am)
I also own a 2004 Z4. After Hurricane Irene and the rains it brought, upon opening the trunk, was startled to see a pool of water in the well over the left rear tire. My insurance adjuster said I needed to get new seals for my trunk or convertible top. It appears you are suggesting to skip the preliminaries and seek a new top for the car. Are there other options?
#242 of 255 Re: Tires [cliff23]
Sep 11, 2011 (4:56 pm)
First, are you wanting to keep RFT's or move towards GFT's?
Without knowing that, its very difficult to know what to suggest for you.
But, I also have Bridgestone "rocks" on my 2007 Z4 Coupe, so I understand exactly where you are coming from...
#243 of 255 Re: Tires [busiris]
Sep 12, 2011 (2:04 pm)
Thanks for your reply. Great question. I guess I would like a suggestion for both. From what I have read in general, any GFT will be smoother, quieter, etc. than any RFT. Therefore I "lean" toward info on an RFT on the remote chance of a flat. My 05' Z-4 had about 40k on it when I purchased it and is not due for any type of service for another 1.5k. I think I have all of 2k on it in the two years I have had it. I infer from the millage some state on tire life that; the original owner replaced the tires with the same Bridgestone "rocks" while they had it. The tread looks very good and "Tire Rack" says not to worry unless some cracking can be ascertained and/or replace after X amont of years reguardless. I like to drive at a reasonably high speed when it is safe to do so and am not one who is prone to per se: test the cars limits. Tire Rack says the new generation Bridgestone RFT's are much more improved but I have not read anywhere so far something that qualifies it to a degree that I can interpret. I love my Z-4 (the previous owner kept the car in excellent condition) and would probably drive it for longer distances given the tire consideration.
#244 of 255 Miscellaneous comments.
Sep 12, 2011 (3:55 pm)
I have Bridgestones on my 2007 BMW Z4 coupe, and it has ridden stiffly from day one, and I have a 2010 328i running Michelin Pilot Sports, which rides much more like a performance-oriented driver's car.
All RFT's and same sized tires (the front and rear sizes on both cars are different tire sizes).
If possible, I would suggest you go by by a BMW dealer and find a similar car with the tire type you are considering buying, and taking a test drive. Maybe that can give you some clarity and insight on whats best foy your requirements...
#245 of 255 Re: Miscellaneous comments. [busiris]
Sep 12, 2011 (7:15 pm)
Thanks for your reply. Interesting your comment: It is one of the things I was thinking of doing. When you say "performance-oriented" concerning the Michelin Pilot Sports on your 328i, are you saying also smoother, quieter, etc.?
#246 of 255 Re: Miscellaneous comments. [cliff23]
Sep 13, 2011 (12:12 pm)
No doubt about it, the Michelins are smoother and quieter, at least , at this stage.
#247 of 255 Re: Z4 2004 - Leak from Top into Trunk - Burned Receiver and Motor for Conv Top [bod2]
Nov 06, 2011 (5:33 am)
I just recently had this same problem. This was my Dad's car, meticulously maintained and garaged since purchased, very frustrated, and sad. It's all I have from him, and don't want to have to sell it, but $1,000 for an amp is way out of my price range! I found out that there was a clog on the drivers side of the roof drain, into the trunk (hence the cause of the water in battery compartment) Replaced battery, filled hydraulic fluid, removed amp (causing the battery to drain), now looking for replacement amp. Class action lawsuit sounds right to me, any update?
#248 of 255 Re: Z4 2004 - Leak from Top into Trunk - Burned Receiver and Motor for Conv Top [joaniek]
Nov 20, 2011 (6:56 am)
In short, I don't have a solution yet. But I haven't spent much time on the problem. On clear days, I've just left the trunk open to let the battery/amp compartment air dry. On rainy days (I don't garage the vehicle) I haven't noticed any additional accumulation of water, but I'm sure that there must be water still leaking into the trunk. I might pull the amp and battery today to look in the compartment, but the amp is starting to fail - not getting much output from the speakers. I'm reluctant to just pull the the amp, partly out of fear that the battery will drain. Was that your experience? Is there a way to avoid that from happening? I've checked a few blogs, and it seems our experience with water in the trunk is common. Wonder if that's why the new Z4's only come with hard top convertibles. I've looked for replacement amps, but haven't found an aftermarket amp that I want to shell out several hundred dollars on. Ultimately, I'm afraid I may have to take it back to the dealer and prepare to get hosed.
#249 of 255 Re: Z4 2004 - Leak from Top into Trunk - Burned Receiver and Motor for Conv Top [bod2]
Dec 20, 2011 (9:40 pm)
Same problem Z4 2003.
(Had it out on the street, big rain, but I did not realize what the issue was)
Lost radio, then the whole thing died.
A day later, it worked.
A couple of days later, radio died again.
Then the car died for good.
Figured out it was the amplifier, trunk carpet was wet.
Opened up the battery compartment, FULL of water.
Battery dead, amplifier corroded/dead.
New (non-BMW battery)
Had to order amplifier from dealer about $500
All works now, only park in car port.
No top motor problems.
I thought it was the trunk drain, which I did not work on, too complicated.
News about possible (?) convertible top is NOT good.
Luckily, I have extended warranty which supposedly covers the top and motor and electronics.
But this happened like a year ago.
What do I tell the dealer?