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E89 Z4 (2009 - current)

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  #1  
Old 08-08-2010, 02:58 PM
BROWNBEAR58 BROWNBEAR58 is offline
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Mein Auto: BMW Z4 SDRIVE35IS
Smile 18 or 19 inch wheels

I just took delivery on my new sdrive35is with 19 inch wheels and just love it. It has 640 miles on it now and i have not pushed it real hard ---not had it over 80 mph yet. What a machine---i love the double clutch tranny, as my wife cannot handle a manual shift.
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  #2  
Old 08-08-2010, 04:24 PM
Dr Stig Dr Stig is offline
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Congrats on the car. Enjoy.

Admit I'm puzzled by the title of the thread though...
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  #3  
Old 08-08-2010, 08:45 PM
Wraith. Wraith. is offline
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Ditto
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  #4  
Old 08-09-2010, 01:16 AM
lux good lux good is offline
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Why was the header....'18 or 19 inch wheels'.
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  #5  
Old 08-09-2010, 03:25 AM
BROWNBEAR58 BROWNBEAR58 is offline
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Mein Auto: BMW Z4 SDRIVE35IS
18 or 19 inch wheels

I wanted to find out what the difference would be
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  #6  
Old 08-09-2010, 04:07 AM
lux good lux good is offline
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Quote:
Originally Posted by BROWNBEAR58 View Post
I wanted to find out what the difference would be

1 inch
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  #7  
Old 08-09-2010, 04:54 AM
BROWNBEAR58 BROWNBEAR58 is offline
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Very original
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  #8  
Old 08-09-2010, 08:31 AM
Mr Breeze Mr Breeze is offline
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Congrats on the new ride! Let's see some pics!
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  #9  
Old 08-09-2010, 02:42 PM
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Rolf-Dieter Rolf-Dieter is offline
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1 inch or 2.54 Centimeter ... oh and yes 19 inch tires are harder to find and do cost more
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I drove a Z4 35i across the USA in 2010 & loved it.
Somehow I just had to get back into the /// M3 and so I did.
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  #10  
Old 08-09-2010, 03:01 PM
Rimmer Rimmer is offline
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Quote:
Originally Posted by Mr Breeze View Post
Congrats on the new ride! Let's see some pics!
This is the poster who said he had a new iS on the 8th of last month and who never posted pics

http://www.bimmerfest.com/forums/sho...d.php?t=467626
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  #11  
Old 08-09-2010, 03:11 PM
Mr Breeze Mr Breeze is offline
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Quote:
Originally Posted by Rimmer View Post
This is the poster who said he had a new iS on the 8th of last month and who never posted pics

http://www.bimmerfest.com/forums/sho...d.php?t=467626
Thanks for the heads up.

Some people are....
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  #12  
Old 08-09-2010, 03:25 PM
Wraith. Wraith. is offline
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.. I think you're going to have to post pics Bear.. otherwise it appears that you manufactured an imaginairy car to go with your imaginary wife....
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  #13  
Old 08-09-2010, 09:09 PM
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classic....
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  #14  
Old 08-10-2010, 08:54 AM
Rimmer Rimmer is offline
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Quote:
Originally Posted by Wraith. View Post
.. I think you're going to have to post pics Bear.. otherwise it appears that you manufactured an imaginairy car to go with your imaginary wife....

He could only come up with BMW's configurator photo last time
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  #15  
Old 08-10-2010, 01:56 PM
Dr Stig Dr Stig is offline
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Some say, imitation is the greatest form of flattery.
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  #16  
Old 08-12-2010, 08:05 AM
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lol u guys are harsh on this side
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  #17  
Old 08-12-2010, 03:20 PM
Wraith. Wraith. is offline
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... just calling it like we see it....
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  #18  
Old 10-13-2010, 10:56 AM
BROWNBEAR58 BROWNBEAR58 is offline
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19 or 18 inch wheels

Any idiot knows the measurement is 1 inch. I was trying to find out if there is a difference in ride or handling or performance
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  #19  
Old 10-13-2010, 11:34 AM
supremeart supremeart is offline
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Quote:
Originally Posted by lux good View Post
1 inch
+1
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  #20  
Old 10-13-2010, 11:39 AM
supremeart supremeart is offline
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Quote:
Originally Posted by BROWNBEAR58 View Post
Any idiot knows the measurement is 1 inch. I was trying to find out if there is a difference in ride or handling or performance
The lower profile tire (19) will likely have better dry weather handling due to the reduced carcass flex, but worse wet weather handling for the same reason, as well as a slightly harsher ride, and a noisier ride. But for an auto car, I wouldn't even worry about it. You gotta teach her to drive a stick so you can get a sports car with a sports cart tranny, which will make way more difference than 1 inch of tire flesh.., LOL..
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  #21  
Old 10-13-2010, 02:01 PM
BROWNBEAR58 BROWNBEAR58 is offline
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Mein Auto: BMW Z4 SDRIVE35IS
18 or 19 inch wheels

I tried to teach her on a 1966 porsche 911 and you should have seen the jerking and stalling. It was comical. She said no more of this and to this day has refused to drive any of my cars that have a manual tranny
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  #22  
Old 10-13-2010, 03:36 PM
gblansten gblansten is offline
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Quote:
Originally Posted by supremeart View Post
The lower profile tire (19) will likely have better dry weather handling due to the reduced carcass flex, but worse wet weather handling for the same reason, as well as a slightly harsher ride, and a noisier ride. But for an auto car, I wouldn't even worry about it. You gotta teach her to drive a stick so you can get a sports car with a sports cart tranny, which will make way more difference than 1 inch of tire flesh.., LOL..
If you look at Edmunds objective performance testing of the 35i with 18s versus the 35is with the 19s the advantage goes to the 18s.

The 35is really took a hit in the slalom.

Here is an interesting test by Car and Driver with a different car where they did testing of different size wheels. Pretty cool.

http://www.caranddriver.com/features...sted-tech_dept
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  #23  
Old 11-21-2012, 03:41 PM
KAJ KAJ is offline
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Thanks for the link to the Car and Driver test of the effects of different wheel sizes on performance. Most of what I have read in this forum and elsewhere was opinion about what should be true in comparing 18 versus 19 inch wheels. Here we finally have data that counters much of the speculation, and it has convinced me to stay with the 18 inch wheels for the Z4 35is I have on order. I was tempted to switch to the 19 inch wheels just for the cool look, but loss in performance and harsher ride seem to be a big price to pay for an inch of cool.

Last edited by KAJ; 11-21-2012 at 03:43 PM.
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  #24  
Old 11-21-2012, 10:48 PM
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Andrew*Debbie Andrew*Debbie is offline
resU deretsigeR
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Quote:
Originally Posted by BROWNBEAR58 View Post
I wanted to find out what the difference would be
BMW 19s ride worse and are heavier. The extra weight harms handling. Some people think the 19s look better.

Some of the BMW 19" rims are prone to cracking.
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