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Can anyone tell me from the alignment specs why this car still pulls right. It has brand new Michelin A/S pilots. I realize there will be some from crown of road but it seems excessive on flat roads. Seems to be worse at low speeds.
Have you checked the brakes to make sure nothing is sticking? How about wheel bearings? Do the wheels feel like they're free or does it feel hard to turn?
The specs look good. That front camber variation is in the direction that would cause a R drift but it is a very minor variation. Are tire pressures the same left to right? Not sure if your tires are directional or not but, even if they are, I'd swap the fronts left to right for a test drive. I'd also try swapping rears left to right. It was really rare but I have run into a few drifting cars that were caused by tires.
The specs look good. That front camber variation is in the direction that would cause a R drift but it is a very minor variation. Are tire pressures the same left to right? Not sure if your tires are directional or not but, even if they are, I'd swap the fronts left to right for a test drive. I'd also try swapping rears left to right. It was really rare but I have run into a few drifting cars that were caused by tires.
Tire pressures are identical. I tried swapping the front tires already but didn’t try the rear. I can try the rears. There not directional.
Have you checked the brakes to make sure nothing is sticking? How about wheel bearings? Do the wheels feel like they're free or does it feel hard to turn?
Your front camber, caster, and toe, while in the green, are still not even. This is one of the things that drives me nuts about alignment techs that just rely on "in the green". Any asymmetry side to side can result in a car not tracking straight when the wheel is held straight, which will, of course, be exacerbated by road crown.
I have 1.2 degrees of camber, 7.4 degrees of caster, and perfectly even +.05 degrees of toe in the front of my Grand Sport and it tracks perfectly. When the road crowns to the right, I have to compensate very gently left; when the road crowns to the left, I have to compensate very gently right. Very few roads in the country are perfectly level.
The specs look good. That front camber variation is in the direction that would cause a R drift but it is a very minor variation. Are tire pressures the same left to right? Not sure if your tires are directional or not but, even if they are, I'd swap the fronts left to right for a test drive. I'd also try swapping rears left to right. It was really rare but I have run into a few drifting cars that were caused by tires.
i didnt see it mentioned in the post was the problem there before the tire change ? before alignment ? did you try to put the steering into track mode to make it tighter? Has the front end been checked for any worn parts ? sorry but im running out of ideas
i didnt see it mentioned in the post was the problem there before the tire change ? before alignment ? did you try to put the steering into track mode to make it tighter? Has the front end been checked for any worn parts ? sorry but im running out of ideas
Bought the car with new tires. Yes it pulled to right before alignment. I tried track mode also. Front end was checked. Might be just me but it feels better with a full tank a fuel than near empty.
You need to find s shop that can check rear caster, this can cause pull also. Some of us on the forum even went as far as buying the the tool and a digital level. The level needs to be zeroed on the surface the car is on and not from "level". Zero caster is the target so would be 90 degrees if you zero on the surface the car is on. If the reference surface is irregular use something straight to reference a couple feet or so.
the height is adjustable is it set to specs all 4 sides ?
I prefer ours set to factory specs for height to keep as much suspension travel as possible. This needs to be done before alignment as changing height affects camber. Moving lower increases negative camber and vice versa.
Can anyone tell me from the alignment specs why this car still pulls right. It has brand new Michelin A/S pilots. I realize there will be some from crown of road but it seems excessive on flat roads. Seems to be worse at low speeds.
Here are the GM recommendations from the FSM:
The numbers look very good. The steering will pull to the side with the most positive camber setting and toward the side with the most negative caster setting. However, GM has specified a plus or minus 0.06-degree tolerance on both of those settings. A tenths of an inch difference like you have may not be noticeable. You may have a slight pull to the right with the front camber settings, but the front caster settings will offset this slight pull from the camber settings. The steering wheel angle is set up with a slight left turn.
In the rear, the camber settings might provide a slight steering effect toward the right (again, maybe not noticeable due a tenth-inch difference); however, we don't know what the rear caster setting is. There is a tiny thrust angle that turns the thrust of the rear wheels toward the right, which would make the rear of the car move to the right and cause the car to travel down the road with the rear of the car stepped sideways to the right, ie, dog walking slightly. I doubt the numbers shown on your alignment sheet are providing the information required to figjue out what is causing the car to pull to the right.
Pulling can also be caused by the tire, brakes or some suspension issue.
Alignment problem
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