I was in same position, and bought the Kumho ASX all-seasons. They seem to be settling down after 700 miles or so into a nice tire. A bit stiffer ride than a summer tire. Excellent gas mileage. I had to have the fronts switched--there was some drift to the right. Seemed to have worked. Quieter now, as well.
I don't know if the Bridgestones are asymmetric. They should be with a Boxster.
Porsche and BMW don't put all-season tires on their new cars in northern climates. I think they should as an option--especially BMW.
|