Ah from Estonia? My girlfriend is Estonian. "Kuidas Lehab?"(forgive if i mispelled im only learnin Esti) I've the same knock coming from my Altezza when i brake parking on a hill etc, only ever at low speeds, coming to a complet stop . As mentioned something to do with the brake pad holder thing! ill be over in Estonia in July, maybe i give ya a shout!
Wasnt very confident in my Altezza when i first got it, very jumpy rear end always afraid of taking a corner too fast. Since i got the coilovers fitted the car handles so much better. pushed it a bit last night and it just stukc to the road.
Dont like the the lack of low end torque, Glanza Turbo out did me from stand stil at the lights last night( i did catch up easily after a few seconds ) Fuel consumption is bad and no leather seats. Apart from that I LOVE IT!