Does Strut Excursion Cause Toe-In Error?

It's probably so negligible that it's almost not worth tracking or can't be tracked maybe

 

Your descriptions seem very thorough, but nevertheless I’m lost. Photographs, sketches might help. I appreciate it is complicated.

 

I haven't done a detailed study of Prius suspension, but in many similar car designs it is normal for toe-in to increase upon spring compression.

This is generally desirable from a handling standpoint, and because the condition is temporary and brief it won't present any tire wear or efficiency loss worthy of action.

 

I think it flexes the alignment both on compression and extension when the car goes down and far up but like you say those are rare events so tire wear would be non-existent or minimal or not really measurable or worth the time to measure because it's so small. On race cars and things like that there's not a lot of suspension undulation because of the tight springs and all the other things set up on the car correctly things like that but the race car is not made to go to food Lion and take the kids to school it needs to have some sort of suspension that makes sense and doesn't beat everybody's kidneys to death You have no sponsors taking the kids to school no reason to be driving a race car and race trim with the kids to school then to the food Lion although some people do it

 

When the front tires hit a road bump, camber becomes more negative and front toe changes to be more negative aka toe-out.

When the front tires 'drops' into a pothole, camber and toe changes would reverse from above.