SORTED!!
Well I am one very happy chappy.
£70 on a pair of part worn tyres, and the car has never driven so smoooooooooothly.
So definitely a problem with tyres.
I am going to cut my losses and the part worn shop will dispose of them for me.
I'm unsure if there was an actual fault with both tyres, or if the tyres just didnt suit the car, and i guess i will never know, all i know is i wont be buying Cooper tyres again.
So can you guys recommend a proper brand of tyres, as i dont want to keep the part worns on here for long!!!
One thing the guy did point out, is that he suggested using the wheel nuts that have the washer type thing on, as he said it looks like the nuts are cutting into the soft alloys
Thanks again for all your advice