sars said:
I have just fitted Falken HS-439 on 17" Wheels and running 2.5 Bar (36 Psi) front and standard 2.9 Bar (42 Psi) rears and that rides/turns in quite well
Those pressures sound way too high. I'm not familiar with your car, wheel tyre combo, but I'd keep a close eye on wear as you could well be running on the centres of the tyres.