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

Reply
 
LinkBack Thread Tools Display Modes
Old 01-18-2015, 09:28 AM   #1
Registered User
 
Join Date: Sep 2009
Location: County Durham
Posts: 1
Thumbs down Problems Balancing wheels

Hi - has anyone had problems balancing front wheels. I've 18 inch wheels on my 2.5 Boxter and have had them balanced several times and they still wobble. Any suggestions on how to put problem right or what the problem might be. The pressure I am running is 29 psi front and 36 psi back? Cheers
thomj01 is offline   Reply With Quote
Old 01-19-2015, 09:29 PM   #2
Registered User
 
Pominoz's Avatar
 
Join Date: Aug 2014
Location: Melbourne
Posts: 136
Quote:
Originally Posted by thomj01 View Post
Hi - has anyone had problems balancing front wheels. I've 18 inch wheels on my 2.5 Boxter and have had them balanced several times and they still wobble. Any suggestions on how to put problem right or what the problem might be. The pressure I am running is 29 psi front and 36 psi back? Cheers
Hi, I had problems getting my 18 inch wheels balanced.
First thing was I got the suspension properly aligned, then I took the wheels to a specialist balancing shop that used a special spindle on a machine that that simulates a real suspension more accurately. Not too expensive and it's all good now.
__________________
Boxster Base, 2002 Manual, Black.
LN Single Row Pro IMS retrofit.
Pominoz is offline   Reply With Quote
Old 01-20-2015, 03:35 AM   #3
Registered User
 
Top_Ramen's Avatar
Are they OEM wheels? Are you running wheel spacers?? Try torquing the front wheels on while the front is off the ground. The wheels might not be sitting on the hub properly & also check the wheels and make sure they arent bent
__________________
'99 Porsche Boxster 986 - weekend car
'04 BMW 645ci e63 - daily driver
'98 BMW 528i e39 - dog carrier

Top_Ramen is offline   Reply With Quote
Old 01-20-2015, 05:43 AM   #4
Registered User
 
Joe B's Avatar
 
Join Date: Dec 2012
Location: Jackson Hole, Wyoming
Posts: 800
Quote:
Originally Posted by thomj01 View Post
2.5 Boxter
Boxster. Just sayin' .

You sure you don't have a bent rim? Should be obvious on a spin balancing machine.
Joe B is offline   Reply With Quote
Old 01-20-2015, 07:04 AM   #5
Registered User
 
b55er's Avatar
 
Join Date: Jan 2011
Location: Bay Area, CA
Posts: 42
I had the same problem. Dealer tried several times to balance & align. Problem was OLD tires, even though there were lots of meat on them and looked good. Check the date code on your tires. I had vibration at 70+ mph.
b55er is offline   Reply With Quote
Old 01-20-2015, 08:36 AM   #6
Registered User
 
bwillia080261's Avatar
 
Join Date: Oct 2014
Location: Fort Collins, Co.
Posts: 74
I had the same problem. I put on brand new tires and watched them dynamic balance them. The rims were perfectly straight and I still had some wobble, particularly on cold tires. It got better when the tires warmed up. This makes me think a lot of high performance tires have some Nylon cords in them. Also I put a 60 lb. bag of sand in the front boot and believe it or not that helped a LOT. Unconventional I know but it also seems to ride and handle better with the weight.
bwillia080261 is offline   Reply With Quote
Old 01-20-2015, 12:02 PM   #7
Registered User
 
BYprodriver's Avatar
 
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,190
Garage
Quote:
Originally Posted by bwillia080261 View Post
I had the same problem. I put on brand new tires and watched them dynamic balance them. The rims were perfectly straight and I still had some wobble, particularly on cold tires. It got better when the tires warmed up. This makes me think a lot of high performance tires have some Nylon cords in them. Also I put a 60 lb. bag of sand in the front boot and believe it or not that helped a LOT. Unconventional I know but it also seems to ride and handle better with the weight.
Every DOT approved tire I have ever looked at lists material & number of belts & plies in tread & sidewalls. Early speed rated Hi- perf radial tires like the Pirelli P7 use a nylon "cap" belt to minimize tire deformation at high speeds. Nylon shrinks when heated & flat spots easily while cold. Michelin Pilot Super Sports don't have nylon belts. One of the many pluses of using premium tires. Weight is a great dampener & Porsches are very sensitive to imbalances. I often notice a ride quality difference between a full tank & low tank.
__________________
2000 S Speed YellowLN 3.6L cylinders & pistons, triple row IMSB upgrade, R&R connecting rods, billet tensioner paddle,oilpump driveshaft.Heads rebuilt by F6I with new valves & springs.Cayman airbox & MAF housing, 996 intake plenum & 75mm T/B. NHP sport converters &Dansk muffler
BYprodriver is offline   Reply With Quote
Old 01-20-2015, 06:10 PM   #8
Registered User
 
fullthrottle52's Avatar
 
Join Date: May 2011
Location: Greensboro, NC
Posts: 238
If they are new tires, take them to a place that has road force balancing, and some one that knows how to use it. It often means dismounting the tires and remounting before balancing again. I battled it for months and 3 sets of tires is how I know. Mine now runs very smooth at all speeds.
__________________
2000 Boxster - Loved and sold
1999 911 Cabriolet - Also loved and sold.
fullthrottle52 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 08:03 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