Front sway is 28mm and rear is 25mm, they are not skinny by any means. I think once more coilover kits become available, I will jump onto one because I don't enjoy the lack of feedback from the stock suspension.
I find this a little scary because the stock setup with the Dunlop Sport AS tires, when I corner a little too hard. It could be quiet while it has grip, however, when the tires started to make some noise, then I felt the suspension could't fully compensate and wanted to give up. I personally like setup where the noise acts as a warning for going above limit, but this... when I hear the sound, I am already over the limit.
The numbness of the steering is also another issue, I can't feel the front tires losing traction during understeer.
Of course, this auto-x style of driving is not a typical Corolla driver would be doing.. just something I have to deal with if I am ever taking it out for a run.
I am surprised no one to do a in-depth testing of the HB, there are 2 automotive coaches that has done thorough testings of the HB (even in automatic) and praised the car. They are in Chinese but I am sure it's nothing we don't already know, the mountain road testing is probably the most interesting.