How long do you get out of tyres. I mainly do motorway miles, pretty much never rag it in first (unless theres an AP22 in the car...) havent done any trackdays but after 4000 miles the tread depth is fine but all the edges on the front tread pattern have started to peel away. Basically all the square edges are now round. I get the occasional rag on a country road but not enough to do this. I paid nearly £70 each for eagle f1s so am a bit gutted as I ve been told that the square edges are what makes them work in the wet. Anyone had anything similar? Cheers.