I just popped down to my local tyre fitter as one of my rears kept losing air. Pulled the tyre off to find that the inside of the tyre had gone bald. So ive decided to bite the bullet and change all four of them as they currently have Continental SPORT CONTACT M3. Also to add i have a set of original e46 m3 alloys on my car the current tyres sizes are 255/35/19 for the rear and 225/40/19 for the front are these sizes correct im thinking of going for a set of pilot sport 2's.