Vibration problems

CPB00GT

Founding Member
Dec 3, 2001
531
1
18
Florida
I bought my 01 GT used recently and it came with afternarket Eagle alloy rims with new tires. I noticed almost immediately that the steering wheel would shimmy back and forth roughly between 45 mph and 55 mph. The gear shifter does the same thing. It seems that it moves faster and slower with the speed of the car. I took the car and had the front end alligned and the new tires re balanced. The tech could not find the problem, the car still does it. The tech said that the tires and wheels seem fine. He also rotated them front to back, but this did not help. The rest of the car is basically stock right now. What is the problem? Maybe the stock driveshaft?
 
The rims are 17 inch with the correct size Goodyears on them. I thought about the rotors but the brake pedal doesn't pulsate when applied. I have checked the tire pressure alot. I may try another driveshaft?
 
I am having a similar vibration problem with my 02 GT and Eagle Alloy 17" Rims. I have replaced a tire, had the wheels/tires balanced by two different dealers and 5 tries to no avail. Friday I had the Ford dealer pull wheels from another Mustang and install on mine. The vibration was resolved. I think the problem is that the Eagle Alloy Wheels need to be hub centric when installed requiring that hubcentric rings be purchased and put on the hub so the wheel will tighten centered on the hub and not centered on the lugs. This will keep the wheels rolling circular and avoid an out of round type bumping/vibration. I have sent an e-mail to Eagle Wheels asking for their suggestions and if the hubcentric rings will solve the problem. Hope to hear back tomorrow or early week. Will let you know.

RCookster
2002 GT, Convertible, 5 Sp, Eagle Alloys Series 077, Borla dual side exhausts, Boss Graphics Package, C&L Plenum with 75mm Accufab TB, K&N Filter, Dual Dash POD
 
I tried all week to no avail to get Eagles Wheels to respond to me through their web site about the vibration problems that I have had with my Eagle Alloy Series 077 wheels. I asked for suggestions on what to try next and asked about their thoughts regarding the use of hubcentric rings and if they knew of a source. I got no reply even after two e-mails. I decided to move ahead without them. I decided to try a third tire dealer and the sixth time trying to get my vibration out and met finally with success! Road Mart here in Alabama has a Hunter wheel balancer that will test the road force applied to the tire during operation and calculates that into the overall balance equation. They determined though that one of my tires (LR) has a Road Force factor of 28 which exceeds the normal threshold. They turned the tire on the rim, but could not get it any lower. They are recommending tire replacement so I am headed to a Goodyear dealer tomorrow to try to get it replaced under warranty. Anyway, my car drives 90 percent better already so I recommend finding someone with the Hunter wheel balancer that can also test for road force. That should help solve the problem and or determine if you have a bad tire when put under pressure. I don't believe that the hubcentric rings are necessarily the cure all as I thought before. I don't think they would hurt of course, but have been unable to locate a source for them that carries ones to specifically work with the Eagle Alloy Series 077, 17" rim. Hope this helps. For the first time since of purchased my car in November 2003, my car is driving better than ever.