all i will say is NEVER scrimp on tyres
Best bit of advice in this thread
End of the day, it's only 4 small contact patches of rubber keeping the car on the road - why scrimp on something so important to safety. And, why spend money on remaps, mods and fancy fuel - all to increase performance of your car - then stick sh*tty low-performance tyres on it?
FWIW, I rate the following tyres (which I've used):
Goodyear F1 GSD3: great in dry and wet, reasonable wear
Yoko Parada Spec-2s: even better in the dry, very progressive, seem OK to me in the wet (I'm using these at the moment as I got them cheap)
Uniroyal Rainsport 1's: fantastic tyre, better in the wet that F1's, not quite as good in the dry, but good durability and usually cheaper than the above two.