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E85 / E86 Z4 (2003-2008)
E85 Z4 Roadster, E86 Z4 Coupe, E85 Z4 M Roadster, and E86 Z4 M Coupe talk with our BMW gurus here.

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  #1  
Old 06-06-2012, 09:36 PM
Z4Black Z4Black is offline
H. Ebel
Location: Renton WA
 
Join Date: Jun 2012
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Mein Auto: Z4 30i
Swerving 2005 Z4

I just purchased a 2005 Z4 with 37,000 miles and not sure if the tires have ever been updated. The right rear was replaced recently though due to a flat. The tread on the left rear still looks pretty good. The front two tires are worn on the outer edges but have less tread on the outside. The car seems to swerve more than it should especially when I'm on a rough highway with groves from heavy trafic. Is that common due because of the smaller wheel base. I noticed this just outside of Vancouver WA. As the roads got better the problem seemed to go away. Any thoughts?
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  #2  
Old 06-07-2012, 06:01 AM
jparnes1 jparnes1 is offline
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This is the E89 forum for Z4's 2009-. Try the E85 forum.
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  #3  
Old 06-07-2012, 06:25 AM
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Andrew*Debbie Andrew*Debbie is offline
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Wrong forum, but tires should never be replaced singly.
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  #4  
Old 06-07-2012, 09:59 AM
mrMTB mrMTB is offline
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Location: Seattle, WA
 
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Agree. Replace the other tires and get a quality alignment. It'll make a world of difference.
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  #5  
Old 06-07-2012, 10:22 PM
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Terry J. Harris Terry J. Harris is offline
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Z4Black - you posted in the correct forum. The posters above experienced excessive tramlining and wound up jumping lanes/forums back to the past . . . .
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Old 06-07-2012, 10:41 PM
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Terry J. Harris Terry J. Harris is offline
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  #7  
Old 06-08-2012, 04:55 AM
Stromtech Stromtech is offline
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Location: Victoria BC
 
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Mein Auto: 2004 Z4 3.0 6 speed
Sounds like the infamous tramlining
Are they all Run Flat Tires?
If they are the original 2005 tires then they are past their sell by date so consider ditching the run flats.
Are all the pressures correct?
When was an alignment last done?

I ditched the run flats recently and it made the world of difference, no more tramlining. I had an alignment done yesterday and it tracks like a new car. (04 3.0i)
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  #8  
Old 06-08-2012, 07:10 AM
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Pinecone Pinecone is offline
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Tramlining can occur with worn tires, certain tires when new, when certain alignment settings are off, and some cars are more prone to it that others.

But I agree with previous posters, I am not big fan of replacing a single tire.

With the worn fronts, I would serious consider new tires all around and a check of the alignment by a good shop.
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  #9  
Old 10-03-2012, 02:30 PM
Z4Black Z4Black is offline
H. Ebel
Location: Renton WA
 
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Hi, thanks for all the advice and sorry for the long delay in my reply. I ended up replacing all 4 tires with Toyo Proxes 4+ (All Seasons). The ride is much better and I haven't been experiencing the swerving I did before. I also did the recommended front end alignment and installed new ceramic brakes so I sure that helped as well.
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Old 10-03-2012, 08:21 PM
4dimnzn 4dimnzn is offline
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Location: Frederick. MD
 
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Quote:
Originally Posted by Z4Black View Post
Hi, thanks for all the advice and sorry for the long delay in my reply. I ended up replacing all 4 tires with Toyo Proxes 4+ (All Seasons). The ride is much better and I haven't been experiencing the swerving I did before. I also did the recommended front end alignment and installed new ceramic brakes so I sure that helped as well.
I understand that in Washington all season tires may be a smart choice. If your budget allows it, next spring snag some summmer high performance tires (Michelin Super Sports are on mine) and take your car to the next level.
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  #11  
Old 10-03-2012, 08:43 PM
Z4Black Z4Black is offline
H. Ebel
Location: Renton WA
 
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Mein Auto: Z4 30i
I know...I went back and forth between the All Season and the Sport tires...maybe next season!
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