Bump Steer
Drifting
Joined: Jun 2004
Posts: 1,887
Likes: 2
From: Havin' fun in Frederick, MD!!!
St. Jude Donor '05 '09
My understanding is that bump steer is the characteristic of the suspension to turn the wheel/tire when it is forced up either by rolling in a turn or hutting a bump. I'm sure there are others here that will have a more concise and accurate definition (and others that think they do).
Drifting
Joined: Nov 2005
Posts: 1,406
Likes: 0
From: Dallas Tx
have you hit a put-hole or something with only one side of the car, and notice that the car pulls in that direction and wants to turn in that direction. Thats bump-steer.
At least that is my understanding of it.
Shane
At least that is my understanding of it.
Shane
Thread Starter
Advanced
Joined: Nov 2005
Posts: 72
Likes: 0
From: St. Louis Missouri
I don't have run flats but I notice when hitting larger bumps, it seems the front moves a bit more than any other car I have driven. I really notice it if I am in a sharp turn and hit a small hole or larger bump. The control does not feel just right when it happens. I didn't know if that is considered bump steer or I possible have worn shocks. I just had my suspension checked and the only problem that was found was a bad tie rod. That has been replaced but there was really no change in the ride.
Safety Car
Joined: Nov 2000
Posts: 4,419
Likes: 6
From: Arroyo Grande CA
Bump Steer:
When an uneven road surface causes a vehicle to steer or lose directional stability, this is called "bump steer." At the front, bump steer is associated with the tie-rod and linkage-arm relationship. It is caused by the method of locating the rear suspension, the type of rear suspension, and the geometry of the various linkages. In race cars, bump steer is designed out of the suspension so that the handling is as precise as possible. In most cars it is present to some degree. In fact, it can be useful to allow engineers to design a small amount of understeer or oversteer into the chassis.
Dictionary of Automotive Terms
When an uneven road surface causes a vehicle to steer or lose directional stability, this is called "bump steer." At the front, bump steer is associated with the tie-rod and linkage-arm relationship. It is caused by the method of locating the rear suspension, the type of rear suspension, and the geometry of the various linkages. In race cars, bump steer is designed out of the suspension so that the handling is as precise as possible. In most cars it is present to some degree. In fact, it can be useful to allow engineers to design a small amount of understeer or oversteer into the chassis.
Dictionary of Automotive Terms
Burning Brakes
Joined: Dec 2004
Posts: 1,067
Likes: 3
From: Lost in the Pine Barrens with only ketchup and relish packs, New Jersey
According to my vette:
Bump steer = slow down over bumpy turns or change to non run flats.
According to me:
The weight distribution of this car is far better and much different than any other car I have driven. My front heavy z28 camaro never did it, but then again I also never caught myself smiling in the rear view of that camaro either!
Bump steer = slow down over bumpy turns or change to non run flats.
According to me:
The weight distribution of this car is far better and much different than any other car I have driven. My front heavy z28 camaro never did it, but then again I also never caught myself smiling in the rear view of that camaro either!
Safety Car
Joined: Aug 2001
Posts: 3,766
Likes: 0
From: Western North Carolina
CI 3-4-5-6-7-8-9-10 Vet
St. Jude Donor '07
Originally Posted by 2KFRC5
Bump Steer:
When an uneven road surface causes a vehicle to steer or lose directional stability, this is called "bump steer." At the front, bump steer is associated with the tie-rod and linkage-arm relationship. It is caused by the method of locating the rear suspension, the type of rear suspension, and the geometry of the various linkages. In race cars, bump steer is designed out of the suspension so that the handling is as precise as possible. In most cars it is present to some degree. In fact, it can be useful to allow engineers to design a small amount of understeer or oversteer into the chassis.
Dictionary of Automotive Terms
When an uneven road surface causes a vehicle to steer or lose directional stability, this is called "bump steer." At the front, bump steer is associated with the tie-rod and linkage-arm relationship. It is caused by the method of locating the rear suspension, the type of rear suspension, and the geometry of the various linkages. In race cars, bump steer is designed out of the suspension so that the handling is as precise as possible. In most cars it is present to some degree. In fact, it can be useful to allow engineers to design a small amount of understeer or oversteer into the chassis.
Dictionary of Automotive Terms
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Thread Starter
Advanced
Joined: Nov 2005
Posts: 72
Likes: 0
From: St. Louis Missouri
Well after reading the post by Dave Q. and many others regarding the C6 Z06 shocks, I orderd a set today from Gene at Fred Beans. At $196 delivered, I don't think there is a better deal around. I priced a few shops in my area and the cheapest quote was $1,195 for the C5 coupe OEM shocks! Of course they all sourced the dealer for thier prices and mentioned it was best if I stayed with the C5 shock. I wonder why
As a new Vette owner, I thought I had suspension problems so I had it checked and things were as they should be. After reading many many post, I found the bump steer and rolling effect are common.
I will let everyone know if they cure my handling woes!
As a new Vette owner, I thought I had suspension problems so I had it checked and things were as they should be. After reading many many post, I found the bump steer and rolling effect are common.
I will let everyone know if they cure my handling woes!
Race Director
Joined: Feb 2004
Posts: 11,651
Likes: 9
From: HOW FAST WAS I GOING OFFICER? Los Angeles Hating GM Dealership Service Dept.'s Since Sept. 2004
St. Jude Donor '04-'05-'06-'07
Originally Posted by MPLC
Well after reading the post by Dave Q. and many others regarding the C6 Z06 shocks, I orderd a set today from Gene at Fred Beans. At $196 delivered, I don't think there is a better deal around. I priced a few shops in my area and the cheapest quote was $1,195 for the C5 coupe OEM shocks! Of course they all sourced the dealer for thier prices and mentioned it was best if I stayed with the C5 shock. I wonder why
As a new Vette owner, I thought I had suspension problems so I had it checked and things were as they should be. After reading many many post, I found the bump steer and rolling effect are common.
I will let everyone know if they cure my handling woes!
As a new Vette owner, I thought I had suspension problems so I had it checked and things were as they should be. After reading many many post, I found the bump steer and rolling effect are common.
I will let everyone know if they cure my handling woes!
C5 parts are more expensive than C6 parts for some reason... but when you're talking to the STEALERSHIP.. well... you know where that gets you now. It's like the wheel sensors for the 97-2K I believe, are almost 2x the cost of '01-'04 sensors?
It's probably the same reason we can go to Gene and get a set of OEM brake pads for about $120 and the local stealership wanted to charge me about $300
is all I can say. Here, here to Gene and our other supporting vendors here on CF
I just hope you enjoy your ride....
Last edited by MyVetteDream; Nov 30, 2005 at 04:39 PM.
Pro
Joined: May 2004
Posts: 669
Likes: 0
From: CA
Bump steer is when the wheels (one or both) toe in or out when the front of the car moves up and down. Same for the rear. For safety this should be as little as possible. That being said, setting suspension up for road racing/autocross can and does become very technical and should only be done by an experienced person. The factory sets up their cars for safety, tire life, gas milage, etc.
Thread Starter
Advanced
Joined: Nov 2005
Posts: 72
Likes: 0
From: St. Louis Missouri
I have had the Z06 shocks installed for a week now and the feel is much tighter than the stock C5. However, I have also noticed the ride seems stiffer or more bumpy than the C5 coupe. How does the feel of the Z06 shocks compare to the Bilstiens?
