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The only way to properly lower a car is to raise the spindles. Any other way changes the geometry. You have to live with whatever comes from it. Good or bad. With upper and lower A arms you can get away with a lot more. My car only has a lower A arm so it matters what you do a little more.
What does the T-bars have to do with anything? The only thing they do , besides act as a spring, is give the lower A arm a pivot point. It is fixed in the car and can not be changed. Just like the upper perch where the top of the strut mounts. Unalterable besides the small adjustments for caster and camber it is fixed. That is why the location of the ball joint matters. Even to the amount of travel you get on the shocks. Which is what I am worried about. If you lower the car by raising the position of the ball joint in reference to the pivot point/t-bor you will have adverse effects on geometry. That is why the 108 “c” measure is so important. In a strut system like on my car when the ball joint is below the pivot as the suspension compresses under load, as in a turn, the the A arm will swing up relative the pivot. So as the ball joint swings up it will also move out away from the pivot or center of the car. As it does this it will move the bottom of the strut out away from center line adding negative camber. As the inside tire of the turn will become less loaded the A arm will swing down pulling the bottom of the strut in towards the pivot adding positive camber. So additional negative camber on the outside wheel and positive camber on the inside well. Yep that’s a good thing. When you lower the car by raising the ball compared to the pivot like straight out or worse slight angled up. When the wheel compresses in a turn it will pull the bottom of the strut in adding positive camber. Yep that’s a bad thing. That is why that lower control when video the front of the car has the droop below the pivot point. As shown in one of those pics above showing the rack and tie rod orientation. Both of those shown would suffer bump steer. So yep I am sure you can change that “c” measurement to what ever you want and lower your car accordingly. But does it change the geometry? Yep. Is it for the better? Nope. I guess like what they say about these cars, and the way they drive, shift, run, or whatever you just have to get use to it.
We are lucky in these cars that where the tie rods pivot and where the A arms pivot are very close in line. So the more parallel you can get them the less bump steer to deal with
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