This makes sense. As stated above, shaking is not really related to alignment...it is more related to wheel balance and radial runout.
Alignment issues
Thread Starter
Pro
Joined: Sep 2011
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From: From: Brooklyn Kiddo, Live in Wantagh, Long Island NY....... New York
Alignment issues
I have set of 360 forged mesh 8 on my 13 grand sport. I have aligned the car several times and it continues to shake feels horrible. I have 275 25 19 in the front and 345 25 20 toto proxy tires. Has anyone had this problem before. Should I change the front tires. Last time I aligned the car forced balanced the front tires. Was a week ago. Hit a hole lightly and back to the same ******** shaking.
Last edited by PRicanC6Xpress; May 21, 2014 at 07:12 PM.
Team Owner
Joined: Sep 2005
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From: Ventura County, Calif
Alignment generally isn't associated with shake.
At what speed(s) does it shake? Do you feel it through the car or just the steering wheel? What have you done about wheel balancing? Have you done a Road Force Balance? Did anyone check runout of the wheels and tires?
At what speed(s) does it shake? Do you feel it through the car or just the steering wheel? What have you done about wheel balancing? Have you done a Road Force Balance? Did anyone check runout of the wheels and tires?
Thread Starter
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Joined: Sep 2011
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From: From: Brooklyn Kiddo, Live in Wantagh, Long Island NY....... New York
It shakes at 65 mph on, it feels the shake only on the steering wheel. I did the road force it was fine for a couple of days. Then I hit a small pot hole and it was back to the shakes.... sorry dont know what the runout of the wheels and tires is can you explain.
Burning Brakes
Joined: Dec 2001
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From: Laguna Woods, CA
FWIW, My '11 GS has had exactly the same problem. It turns out that one tire had a separated belt. What doesn't make sense is that it was fine before you dinged the pothole unless it wasn't so small. In addition, tire, wheel, and balance problems very often occur right around 65-75 mph
Team Owner
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From: Southern Utah
Runout is simply how round the tire is in relation to the ground. You can easily check it by jacking up a corner of the car until the wheel in question is about an eighth of an inch off the ground, then get down there and turn that wheel by hand and watch how the space to the ground changes as it turns. If it is round, that eighth of an inch will stay the same as you turn it. If it is out of round, that distance to the ground will vary as the wheel is turned. This runout can be caused by any part of the rotating assembly...wheel, tire or brake disc/hub. In other words, even though the tire is round, there can be runout caused by the wheel hub not being centered.
Last edited by cclive; May 23, 2014 at 11:36 AM.
Melting Slicks
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St. Jude Donor '10-'11-'12-'13-'14
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