2. The key hole area quality and fit ''issue'' has been fixed by FIAT since over an year. 3. Linea Diesel was not the fastest off the blocks, i agree. But unleash it on the open road, and then see it shine. And put it on a curvy road to see the competition being blown away. The query you've raised is very relevant as the upsized tires will effectively decrease the final drive ratio by a slight margin. Have FIAT made any changes to the gear ratios? How different does the car drive compared to the earlier linea ? These two questions are not answered yet and need a rather thorough test drive to bring out any meaningful result. Cheers.