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 > The Best of Bimmerfest! > Tire Rack's Tires, Wheels, Brakes & Suspension

Tire Rack's Tires, Wheels, Brakes & Suspension
Discuss everything about wheels, tires, suspension and brakes for your BMW.

Sponsored by The Tirerack. Moderated by Gary@Tirerack.com

Reply
 
Thread Tools Display Modes
  #1  
Old 06-26-2012, 01:50 PM
asus389 asus389 is offline
Registered User
Location: Ann Arbor, MI
 
Join Date: May 2009
Posts: 88
Mein Auto: 2006 325i
At my wits end: tire/wheel problem or something else?

Guys I am in need of some help. I bought an 06 325i (e90) sports package as a CPO car in 2009. Ever since I have had it, it has had a speed related droning/howling noise and vibration through 3 sets of tires. For the first two sets the front tires eventually developed a feathered wear pattern on the inside edges. The rears seem to wear fine.

The most recent tire purchase is a set of Bridgestone s04 pole position non-RFT summer tires. They were road force balance down to single digits and the car (again) was aligned when I put the new tires on. (See attached). I had the thrust arm bushings and front sway bar bushings replaced within the last year.

The most recent set of tires have been on the car for ~3000 miles and while I can't see any uneven wear, I am getting a lot of noise and I have the same vibration in the same speed range. The noise starts around 45mph and the vibration is more of a rhythmic "rumble" that comes on at about 70mph and is very pronounced by 80mph.

The car been inspected 3 times and everyone says it "looks tight". But clearly something is wrong. What gives? Are the factory alignment specs to blame for this? Are the road force numbers OK, or do they need to be lower to rule out vibration? Should I be looking somewhere not wheels/tires? I have never had issues like this with any other car I have owned. Help?

Alignment:

Toe

Front: 7 minutes per side (range 7min +-2min)

Rear: 9 minutes per side (range 9min +-2min).

Camber

Front: -32 minutes left side, -22 minutes right side (range -18min +-30min)

Rear: -1 deg 30 minutes on both sides (range -1deg30min +-5min).

Roadforce numbers:

RF 10lbs
LF 2lbs
RR 2lbs
LR 5lbs

Last edited by asus389; 06-28-2012 at 04:29 PM.
Reply With Quote
Advertisement
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > The Best of Bimmerfest! > Tire Rack's Tires, Wheels, Brakes & Suspension
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 12:14 AM.


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