Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 05-05-2008, 07:27 PM   #1
zdc
Registered User
 
Join Date: May 2008
Location: DC
Posts: 5
Brake vibration/rotor issue, need help : )

Just got a one owner 2004 Boxter S w only 11k miles

Above 50 there is noticeable vibration when braking even worse when braking from 70-80. The previous owner had the same issue and replaced the rotors at 7K under factory warranty. Only 4K later this vibration seems to still be there with hardly any wear on the new rotors...

Anyone else with this issue or thoughts?

Thanks

zdc is offline   Reply With Quote
Old 05-05-2008, 08:03 PM   #2
Porsche Purist
 
Paul's Avatar
 
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,063
Garage
Usual culprits:

Warped rotors

Contaminated pads

Bad tires or tire balance

Bad alignment

Bad control arm bushings
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster bought new. Installed used motor at 89k.
1987 924S . 2002 996TT. PST2
Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended...
Paul is offline   Reply With Quote
Old 05-06-2008, 06:01 AM   #3
Registered User
 
Join Date: Feb 2008
Location: NH
Posts: 8
Check torque on the lugnuts. The rotors may warp if they're too tight or torqued unevenly. I think it's around 94ft lbs but someone else on the forum may know for sure.

Last edited by RickS; 05-06-2008 at 06:05 AM.
RickS is offline   Reply With Quote
Old 05-06-2008, 06:12 AM   #4
Registered User
 
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,236
I'm experiencing the same issue... but on a much older car with much higher mileage.

Due to small ridges in one of my front rotors that's missing from the other three rotors, which are brand new (400 miles on them), I am replacing the rotor.

However, a warped rotor is the fruit on my tree, not the root of the problem. Something warped that perfectly new and straight rotor.

I'm also rebuilding my calipers up front with new piston seals and dust boots in case a stuck piston is the root of the problem.

A worn bearing can be a root cause as well, but at 11k, the worn suspension parts and wheel bearings should not be your root issue. They're nearly new.

If I were you, I'd have the calipers inspected thoroughly before putting new rotors up front. No sense in throwing good money time and time again into the car.

There should only be one village idiot on this board dumping too much unnecessary cash into his aging boxster and I own that title, thank you very much!

__________________
'97 Boxster (Black Hole for 42,000 Dead Presidents and counting) - 122k
New motor, transmission, suspension, and on and on and on it goes...
RandallNeighbour is offline   Reply With Quote
Reply


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
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 01:57 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page