QUOTE(dwRK @ Jan 2 2021, 03:04 PM)
nobody measures caster... it cannot be adjusted normally... it's only a problem if involved in a big accident
pulling left or right can be tyre related...I changed 4 new tyres, alignment done, but car pull to left...swap tyre left to right solved the problem
pulling one side can also be torque-steer problem...this affects both acceleration and to a degree deceleration
imho your alignment too neutral... easy to drift, not stable at high speed...ok for urban driving... the marginal non symmetric camber is not a problem
btw... didn't you post somewhere last time that you are not a fan of tyre alignment and rotation? anyways not important...
Yes @dwRK I used to consider myself as being not a fan of tyre alignment and rotation till todate .
Subsequent to my previous wheel alignment 3.5 years ago post front axle tyres replacements ,about a year later my mechanic did advise me to do another wheel alignment after changing some front suspension parts (not sure whether it is cheapo absorbers or absorber links etc ) .
However as typically , I did not follow through with the alignment advice as I felt vehicle handling/cornering was ok and fine .
This may help explain why about a year ago , I began feeling unsteady/unstable steering wheel during cornering into Right ...... probably caused by and related to out of spec alignment angles .
If not for the recent 'major' front suspension parts replacement and I was troubled by the real 'lousy' right turn cornering and pulling left , I wouldn't have visited this alignment shop .
As regards current alignment values as being too neutral .... easy to drift and unstable at high speed .......
I think you could be right about it including the marginal assymetric camber angles not being a problem .
Do you think an inappropriate or less than 'ideal' non-adjustable front caster angles could lead to my current 'complaints of annoyance' ??? .
I think you are right in suggesting the 3.5 year olds 'worn' front tyres could cause pulling to one side here ......
Unfortunately caster angles are not being checked and measured here , accepting the scenario that Caster angles on Avanza can't be adjusted .
On torque-steer / acceleration/deceleration , I would need to google to read up more about it and appreciate your highlighting of it .
Oh no ... the pulling left phenomenon that I tested occurs at straight ahead driving at a constant road speed of 80/90/110 km per hr , not really during acceleration/deceleration , if that matters .
Quantitatively , I would say my Avanza pulling left fully occupying/blocking neighbouring lane completely in about 6-8 seconds after hands off steering wheel whilst traveling at 90 km/hr .
This post has been edited by zeng: Jan 4 2021, 11:12 AM