Sarah faced the wrong way after coming off a round about in the wet. They just didn't seem to have grip. Later that day still wet, I done over double her speed and my tyres stuck even though I had cheap Falken's on mine.Cooper is the only American manufactured tyre you can still buy.
Lost faith? - Can you explain?
Whats the age of the tyres? Maybe they are older than recomended?
I know you are supposed to replace the tyres at 4 years old regardless of tread left, although many of us don't.
Perhaps they have gone hard which would definately reduce grip.
If coopers are out then my choice would be BF Goodrich - they have right 'look' for a 3rd or 2nd gen.