Hello, yes, I can explain the basics about the stabilizers.
I have the large stabilizer kit installed in my Leon.
However, I only have a 2WD model, so the rear stabilizer bar should be different on the 4Motion version.
The size of my stabilizer bars is: front: 28mm, rear: 23mm.
Since I haven't had a stabilizer bar on the multi-link rear axle before, the difference in driving behavior is very noticeable.
It significantly changes the handling characteristics, making it more prone to oversteer. Additionally, I'm using an unusual tire pressure that further emphasizes the oversteer tendency.
The suspension is clearly adapted to the demands of track days or motorsport events.
With 225/40 R 18 tires, the cornering speeds are even higher compared to our tested R32 model with DSG!
The only problem is that the suspension is now optimized for a specific purpose, and the 'normal' driving experience is no longer quite as optimal.
The large stabilizers reduce the body roll to nearly zero, and that's where the problem lies.
In conjunction with the lowering, the Seat now has a slight negative camber. When driving moderately curved roads, the entire wheel no longer makes contact with the road in the curve. As a result, driving moderately curved roads feels somewhat 'wobbly,' and you get the feeling that the car might slide out.
However, if you're now approaching the same curve at a significantly faster speed and intentionally want to induce the car to slide, the tires will completely grip, and the vehicle will run through the curve as if on rails. The actual limit has not even been reached yet.
Furthermore, the rear axle is now very stiff, and bumps in the road are more noticeable on the rear seat than on the front.
So, to summarize:
- The chassis tends to oversteer noticeably.
- The range is significantly expanded, but with limitations within the normal range.
- The side slope is decreasing significantly.
To the best of my knowledge, this stabilizer kit was originally designed for the Seat Leon Cup, which means it uses components developed for track use. This, of course, also has drawbacks for normal road driving.
Would I use it again?
Yes, I do, - No, my family doesn't.
Best regards, Jochen.