I am owning a Honda City 2010 model (GM2). My front caster angle differs as below;

left: 3.13 degree
right: 2.55 degree

No accident on this car and I have just changed the lower arm (right), absorbers (both sides), tie rod end (both).

Please advise other possibilities why the caster is different on left and right?

 

which side is the correct caster?

why did you change the right lower arm?

 

Left side is the correct caster based on comparison with other owners. The previous caster angle on the right was 2.39 before changing the right arm, we suspect on the faulty lower arm which may cause the caster to runs off hence, we change it.

After changing it, it did improve a bit (from 2.39 to 2.55). But still, differs from the left.

 

subframe bent or shifted?

 

I assume when you say subframe bend or shifted, the subframe itself is still in a straight line position. In this case, left caster should be runs off as well. But left caster is ok. Or, are you trying to say the subframe bend in the sense that it is a slight "v" position? Would there other parts which affect the caster other than subframe and arm?

 

caster is the angle from the top of the strut to the bottom ball joint. theres not many parts involved here.

you say theres been no accidents, but you only need to hit a hard bump while traveling fast to bend metal.

all the parts involved are the strut, the knuckle, the lower control arm. apart from this, its the top of the fender and the bottom subframe.

no one on the internet is going to answer correctly what is wrong with YOUR car. i cannot see your car. its a guess. why would you think anything more when you ask a question like this?

but really, car frames bend over use. its not a big deal your caster is off.

does it drive weird? you can align the car with a bias to make it drive straight.

otherwise, it shouldnt matter.