Feb 23, 2015, 04:58 PM
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[Z06] Car is pulling right .. please help
Thread Starter
Instructor
Joined: Jan 2008
Posts: 201
Likes: 1
From: Los Angeles, CA
Car is pulling right .. please help
After i purchased the new set of tires (goodyear eagle F1 GSD3s) took it to the Sears and had an alingnment ..and i noticed that the car was pulling right(slightly but it was still there) ,took the car back and asked them about that ,they told me they did the alignment properly but i wasn't convinced so i 've got full refund and took my car to the local chevy dealership ..service guy looked at the print out told me the alignment is fine ,took the car out for a test drive and said "car is slighlty moving to the right , it might be road crown .. i wouldn't bother" .. he also told me that he had a mustang and his car is doing the same thing ..is that really normal? the reason i'm asking you is b/c i drove the wife's car (subaru impreza)on the same exact road and it seemed like it was going straight unlike my Z...is it because i got wider tires and it makes that road crown pull more obvious?then again it's not pulling like crazy but it's so annoying..thanks in advance
Last edited by glamcem; May 29, 2008 at 04:06 AM.
Safety Car
Joined: Mar 2000
Posts: 4,847
Likes: 10
From: Bartlett, IL
Cruise-In XI Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Road crowning can definately cause what you are describing..... wider tires amplify the condition. I would find a freshly paved section of road that is flat (some roads pitch down slightly from the center for run off). If the problem persists I agree that the car should be taken to a performance shop for a full alignment.
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
You have had two alignments done by people who don't know what they are doing. There is a way to adjust caster that will not affect your steering and you will never notice it, but it will counteract the drift you describe due to road crown. My car will go hands-off straight down any road.
Thread Starter
Instructor
Joined: Jan 2008
Posts: 201
Likes: 1
From: Los Angeles, CA
hi i've got an 03 Z06 , i set my tire pressures based on factorys specs(33psi all around)..and yes i checked my tires pressures and they're fine..i forgot to mention that i took my car to 3 different places with the print-out in my hand (sears alignment) and they said alignment looks fine .i don't know maybe they were just lazy, also asked some performance alignment shop and quoted $250 (?) for 4 wheel alignment ...and he mentioned that the car might still pull right after the alignment so i basically couldn't sacrifice my $250 to get a better alignment but still have to deal with that annoying thing ..thanks for the input
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Burning Brakes
Joined: Jun 2004
Posts: 1,184
Likes: 3
From: KADS- If it has wings or an engine, I can break it. Dallas TX
The wide tires really pull a with a crowned surface.
Sounds like your toe is set a little out. which will kinda make it "drift" or "wander" a little in the lane. A little toe in will make the car a little more stable at high speeds.
Post your alingment specs: caster, camber, toe, etc.
Sounds like your toe is set a little out. which will kinda make it "drift" or "wander" a little in the lane. A little toe in will make the car a little more stable at high speeds.
Post your alingment specs: caster, camber, toe, etc.
Thread Starter
Instructor
Joined: Jan 2008
Posts: 201
Likes: 1
From: Los Angeles, CA
FRONT
Caster Left = 6.9
Right = 7.1
Camber Left = -0.9
Right = -0.8
Toe Left = 0.04
Right = 0.03
total toe=0.07
REAR
Camber Left = -0.5
Right = -0.6
Toe Left = -0.01
Right = 0.02
Total toe= 0.01
Thrust Angle = -0.01
Caster Left = 6.9
Right = 7.1
Camber Left = -0.9
Right = -0.8
Toe Left = 0.04
Right = 0.03
total toe=0.07
REAR
Camber Left = -0.5
Right = -0.6
Toe Left = -0.01
Right = 0.02
Total toe= 0.01
Thrust Angle = -0.01
Racer
Joined: Sep 2006
Posts: 290
Likes: 0
From: West New York New Jersey
Take it to an actual shop just to be sure. But one other really silly little thing. I am sure you probably already did this... but check your tire pressures. Wider tires will always tend to track with the road surface but if you have uneven pressures it can go all over.
I also believe there was a thread a few months back where someone had two different "rear" tire pressures and they were wondering why the car pulled in one direction on accel and then the opposite on decel.
I also believe there was a thread a few months back where someone had two different "rear" tire pressures and they were wondering why the car pulled in one direction on accel and then the opposite on decel.
Tech Contributor
Joined: Oct 1999
Posts: 41,042
Likes: 9,802
From: Charlotte, NC (formerly Endicott, NY)
The numbers look OK but if you do not have a tire pressure or tire drag (excessive rolling resistance) issue it could be because the machine wasn't calibrated. Then anybody looking at the numbers would think it was fine when in fact the numbers are wrong.
Bill
Bill
Le Mans Master
Joined: Aug 2005
Posts: 7,201
Likes: 0
From: DP(oh you know where) IL
St. Jude Donor '06
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
The front camber and toe must be exact as well.
The big one is the caster. Both sides must be identical, max but equal
