At least i'm not alone!
My 1st post! I'm a relatively new Alfa owner - got a 1yr old 159 last June which I'm mostly very happy with. I left it to get engine oil replaced a few days ago with Mervyn Stewart in Belfast only to be told the tread on front tyres was illegal and the wheels needed to be re-alligned. The tread on back tyres is 5mm but was recommended to replace all 4 at a cost close to £500! Needless to say I was shocked. I didn't get them changed and will look elsewhere. I came across this site and noticed 9 pages of posts on 159 tyres alone! I've plenty of reading to do but hope to find an answer in there somewhere. Pity my first post is a grumble as apart from the tyres and a few minor issues it's a great car.