Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E85 / E86 Z4 (2003-2008)

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.

Reply
 
Thread Tools Display Modes
  #1  
Old 07-22-2013, 02:41 PM
Lew Shaw Lew Shaw is offline
Registered User
Location: Glendale, Arizona
 
Join Date: Oct 2012
Posts: 10
Mein Auto: 2005 Z4 3.0i Roadster
Front too low or tire too big?

I have a 2005 3.0i Roadster with sport suspension. Early on, I replaced the wheels and tires. I removed the front 225/40R18 Bridgestone run flats which had a diameter of 25.1 inches and mounted Hankook 225/45 ZR18's with a diameter of 25.9 inches, hoping the extra sidewall would give a much smoother ride. Well, the ride IS much smoother, but I have worn a hole in the wheel liner (both sides) at the top edge, right near where the bumper connects to the fender. So, I presume the clearance is not sufficient. Now, the question is, is there a way to raise the body slightly (1/2 inch) in the front ? If not, should I go back to a smaller front tire (225/40R18) or is there another option?
Thanks!
Reply With Quote
Ads by Google
  #2  
Old 07-23-2013, 04:59 AM
GeorgeT's Avatar
GeorgeT GeorgeT is offline
Officially Welcomed to the 'Fest
Location: Seneca, SC
 
Join Date: Jun 2007
Posts: 992
Mein Auto: '07 750i BMW; '03 Z4 BMW
You would have seen a dramatic improvement in the ride by just replacing the run flats with non-run flays of the same size. Go back to the original size.
Reply With Quote
  #3  
Old 07-23-2013, 07:00 AM
imz4n's Avatar
imz4n imz4n is offline
Z ENTHUSIAST
Location: OC, CA.
 
Join Date: Oct 2005
Posts: 692
Mein Auto: 06 3.0 si Z4R
I assume you are rubbing on the outer edge on both the left and right sides of the car or are you rubbing on both sides ( left and right turns ) on both sides of the car? You kept the rears the same as the RFT's?
__________________
Reply With Quote
  #4  
Old 07-23-2013, 08:19 PM
Lew Shaw Lew Shaw is offline
Registered User
Location: Glendale, Arizona
 
Join Date: Oct 2012
Posts: 10
Mein Auto: 2005 Z4 3.0i Roadster
Yes, it is rubbing on both the left and right fenders equally.

No, I replaced the rear 255/35R18 run flats with a diameter of 25.1 inches with 255/40ZR18's with a diameter of 26.0 inches which fill the wheel openings much better and also corrected the speedometer reading.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E85 / E86 Z4 (2003-2008)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 08:09 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms