Hi all... new to the forum. Got a 2012 c250 coupe that came with 18 inch amg 5 stroke wheels and like a moran i decided to spend 2000 pounds on 19 inches OZ Racing montecarlo wheels.. as you do cose they looked cool. And then the problems started coming in one by one. The main one for me is the ware of the tyres. Any set of tyres last be less then 5000 miles.. the car is my daily driver and i do a average of 70 miles a day 7 days a week. In a year ive changed 6 sets of tires .. from Nexus to Bridgestone to Michelin. Can anyone tell me if i need a tune after going from 18 to 19? Im desperate and broke at the same time. Thanks a lot