High Speed Vibration?
Thread Starter
Melting Slicks
Joined: Jun 2009
Posts: 3,142
Likes: 1
From: SE Coast FL
High Speed Vibration?
75+ I start to get a serious vibration mainly felt in the seat, very little in the steering wheel, when I back off the vibration goes away.
Could this be more than a rear tire balancing issue?
Maybe its the interstate (I-95) surface (blacktop)?
The tires (GY GS2 F1 EMT) are relatively new and of course were high speed balanced at the time installed...
Are there variations to "high speed balancing"? Is every shop different?
Any retail shop suggestions for the balancing?
Thanks
Could this be more than a rear tire balancing issue?
Maybe its the interstate (I-95) surface (blacktop)?
The tires (GY GS2 F1 EMT) are relatively new and of course were high speed balanced at the time installed...
Are there variations to "high speed balancing"? Is every shop different?
Any retail shop suggestions for the balancing?
Thanks
Last edited by jpuli28; Mar 30, 2010 at 04:16 AM.
Le Mans Master
Joined: Nov 2007
Posts: 6,406
Likes: 197
From: Wilkes-Barre Pa
If you think it could be the road go on a different highway and see if it does the same thing.
If it still happens I would take it to the same shop and see if they will make it right.
If it still happens I would take it to the same shop and see if they will make it right.
Melting Slicks
Joined: Nov 2004
Posts: 2,043
Likes: 2
From: Bergen County, NJ Sarasota, FL
[QUOTE=jpuli28;1573592410]
Are there variations to "high speed balancing"? Is every shop different?
Any retail shop suggestions for the balancing?
QUOTE]
Yes
There is static, dynamic and road force balancing.
Also, the equipment could be out of adjustment or there could be operator error.
Here's some information:
http://www.gsp9700.com/pub/features/intro.cfm
Are there variations to "high speed balancing"? Is every shop different?
Any retail shop suggestions for the balancing?
QUOTE]
Yes
There is static, dynamic and road force balancing.
Also, the equipment could be out of adjustment or there could be operator error.
Here's some information:
http://www.gsp9700.com/pub/features/intro.cfm
Instructor
Joined: Apr 2008
Posts: 204
Likes: 0
From: Newark Delaware
I had new rims put on a few months ago. Took to local Porsche dealer to get installed. Car seemed fine until got up on interstate and had a vibration. Went back and they rechecked the balance. Found a weight had come off one wheel. All is fine now. Take it back and ask to have it checked.
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 199
From: Bay Area Ca.
Do you have stock rims or aftermarket? Vette is hub centric. Rim may not be centered if aftermarket rim. Otherwise it would not be the first bad balancing job I have heard off plus weights do fall off. Just get it re checked.
Melting Slicks
Joined: Aug 2006
Posts: 2,409
Likes: 129
From: Fairview Heights IL
First of all, make damn sure all your lug nuts are still properly torqued. Then get the balance re-checked. As others have said, road force balance is best. If you have after-market wheels, it's remotely possible that one is faulty. That should show up during balancing.
Melting Slicks
Joined: Jan 2003
Posts: 2,026
Likes: 178
From: Jacksonville, NC
I have posted before but I have aftermarket wheels and I have a moderate vibration but noticed it is with acceleration past 70MPH. It is in the steering wheel and shifter. I have had the wheels road forced twice by the Hunter 9700 with no reported issues. My last resort is finding someone that will switch wheels with me for a drive so I can at least isolate the problem. Would the Hunter 9700 also recognized if the wheel was not hub centric? Good luck to the OP. I will be interested to see what your cure is. Mine problem is also on I-95 but in VA and sometime wonder if that is the real issue. I should have just kept my factory and been happy.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette
Pouria Savadkouei
Race Director
Joined: Jan 2005
Posts: 10,924
Likes: 851
From: Daytona Beach FL
This problem is fairly common with some aftermarket wheels.
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
Last edited by BEZ06; Mar 30, 2010 at 11:02 AM.
Thread Starter
Melting Slicks
Joined: Jun 2009
Posts: 3,142
Likes: 1
From: SE Coast FL
Yes
There is static, dynamic and road force balancing.
Also, the equipment could be out of adjustment or there could be operator error.
Here's some information:
http://www.gsp9700.com/pub/features/intro.cfm
There is static, dynamic and road force balancing.
Also, the equipment could be out of adjustment or there could be operator error.
Here's some information:
http://www.gsp9700.com/pub/features/intro.cfm
Sold :o
This problem is fairly common with some aftermarket wheels.
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
Thanks for the input guys, Ill look into your suggestions. Ive taken the car back before for a rebalance but it hasnt cured the issue. So I didnt know if "high speed balancing" had its limit and the definition was subjective.
Last edited by jpuli28; Mar 30, 2010 at 11:57 AM.
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 461
From: Southern Utah
This problem is fairly common with some aftermarket wheels.
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
( And good point!)
Drifting
Joined: Dec 2008
Posts: 1,767
Likes: 2
From: Melbourne, Arkansas
Cruise-In X Veteran
First of all, make damn sure all your lug nuts are still properly torqued. Then get the balance re-checked. As others have said, road force balance is best. If you have after-market wheels, it's remotely possible that one is faulty. That should show up during balancing.
If after all that checks good you could also have a tire seperating internally. One of my Factory Goodyears on the front I was told by the tire shop (they also race dirt track cars) that how the tire looked when they deflated it, they said that the plys had seperated internally. They ask if I had noticed any vibrations and I said that I did around 70 mph.
Mark
Drifting
Joined: Dec 2008
Posts: 1,767
Likes: 2
From: Melbourne, Arkansas
Cruise-In X Veteran
This problem is fairly common with some aftermarket wheels.
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
The OE wheels have a countersunk area on the backside face of the wheel around the lug hole where the Tinnerman nuts that hold the rotors on while the car comes down the assembly line before calipers and wheels are installed can fit so the wheel fits flush to the hub. Many other wheels don't have the recessed area.
So.....make sure those flat retaining nuts are removed when putting on aftermarket wheels or they may not mate up flush with the hub and you'll get that vibration at about 75-80 mph.
Bob
I didn't see that you were running aftermarket wheels before I made my first post....
Mark
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 199
From: Bay Area Ca.
This sounds just like the problem I went thru.. My wheels were 1mm larger bore than the hub. It made a difference at higher speed like yours. I just had heavy tap added around the cars hub, vibration gone. The tap acted like a spacer. 1mm is not much but it did cause vibration.
Drifting
Joined: Apr 2009
Posts: 1,307
Likes: 26
From: Miami
I wasted a fortune constantly paying for my wheels to be balanced. I would also not got back to the same place if I did not leave happy. I figured that their machine, capabilities or employees are suspect. I had repros... I then got a drivetrain vibration at a different speed. What a pain!! after fixin it, I sold my car and I feel ten years younger.. But I will buy again
Last edited by SgtRod; Mar 30, 2010 at 01:40 PM.
Thread Starter
Melting Slicks
Joined: Jun 2009
Posts: 3,142
Likes: 1
From: SE Coast FL
I wasted a fortune constantly paying for balancing. I would also not got back to the same place if I did not leave happy. I figured that their machine, capabilities or employees are suspect. I had repros... I then got a drivetrain vibration at a different speed. What a pain!! after fixin it, I sold my car and I feel ten years younger.. But I will buy again
at what speed did you get it?
Drifting
Joined: Apr 2009
Posts: 1,307
Likes: 26
From: Miami
I got the vibration between 50-60mph. Some people told me everything was fine and that I was crazy.... I may be crazy but this thing IS vibrating! I drove my car alot so I could feel everything. At the end after insisting, it was something with the tourqe tube bearing/coverter. Was that your experience?
Last edited by SgtRod; Mar 30, 2010 at 07:03 PM.
Melting Slicks
Joined: Jan 2003
Posts: 2,026
Likes: 178
From: Jacksonville, NC
Are you saying I should take something like duct tape and thicken up the hub so if my rims are not hub centric is will help center them up before I properly torque the lug nuts?
This sounds just like the problem I went thru.. My wheels were 1mm larger bore than the hub. It made a difference at higher speed like yours. I just had heavy tap added around the cars hub, vibration gone. The tap acted like a spacer. 1mm is not much but it did cause vibration.
