I have a w203 c180k 2004 facelift. when i got the car the front tyres were shot on outside edge and where a mix match etc. car drove nice apart from usual merc slight drift to left. put new tyres on and within 3000 miles outer edges gone. got it tracked at local place i know ( no merc specialist close by as out in sticks). the ns was +9 and os was +3. merc specs is listed as 0 06'. and ns tyre was worse so thought great. tracked it the best they could and now reads ns + 0.9. os - 0.3. problem i have is steering feels much heavier than before. is it because of the worn tyres etc or is it because its now driving as it should be. your thoughts please. many thanks